fix(security): escape brand tokens, block tracker redirects, trim logo diagnostic (GHSA-j347, mw76, 29vm) (#961)
* fix(security): escape brand tokens, block tracker redirects, trim logo diagnostic (GHSA-j347, mw76, 29vm)
GHSA-j347 — buildCachedPayload sanitizes the operator's HTML and THEN runs
applyBrandTokens over the result with a plain String.replace, so any markup in
a token value reached the public origin unfiltered. The default templates
interpolate tokens into text AND into quoted attributes
(<img src="{{brand_logo_url}}" alt="{{company_name}} logo">,
href="mailto:{{support_email}}"), so a value could close the attribute and
inject. Token values are now HTML-escaped on substitution, mirroring
galleryOgService's escapeHtml. sanitizeBrandUrl's case-sensitive literal
'javascript:' check (which 'JavaScript:' walked straight past) is replaced by
an http/https scheme allowlist; relative logo paths are unaffected.
Writer is settings.edit (super_admin only) and the CSP blocks inline script,
so this is defence-in-depth — but sanitize-then-substitute is a real ordering
bug regardless.
GHSA-mw76 — the SSRF decline STANDS: self-hosted operators legitimately point
analytics at private addresses, so connection-time IP blocking would break real
deployments. Fixed only the narrow leak: undici strips
Authorization/Cookie/Proxy-Authorization/Host across a cross-origin redirect,
but umamiAdapter sends a CUSTOM x-umami-api-key header, which would be replayed
verbatim to the redirect target. Both adapters now use redirect: 'error'.
GHSA-29vm — the logo diagnostic echoed absolute storage roots, process.cwd()
and absolute candidate paths. It now reports candidates relative to
<STORAGE>/<CWD_STORAGE>, which answers the same 'which candidate existed'
question. It also still advertised the raw-absolute candidate that GHSA-c7x5
removed from resolveLogoFile, so it was misreporting what the resolver tries —
aligned with the real candidate list.
publicSiteService.test.js expectation updated: an '&' in a company name is now
emitted as '&'. Renders identically; the raw payload string differs.
* fix(security): codex round 2 — stop the remaining logo-path disclosure, mirror the resolver (GHSA-29vm)
- sources[].value was still echoed verbatim. branding_logo_path is stored
ABSOLUTE by multer, so relativising only resolvedTo and the candidate paths
left the filesystem layout going out anyway. It is now relativised too.
- Round 1 dropped the raw-absolute candidate on the grounds that GHSA-c7x5
removed it from resolveLogoFile — but the c7x5 follow-up RE-ADDED it (kept,
subject to the containment filter, so a legitimate multer path still
resolves). The diagnostic therefore reported every candidate as missing for
a contained absolute logo while resolvedTo named the file. It now mirrors the
resolver, containment filter included.
One deliberate cosmetic divergence, commented in place: for an absolute value
the resolver also tries path.join(root, value-minus-leading-slash), which can
never exist and would re-embed the absolute path this endpoint must stop
echoing. Omitted; every candidate that can actually match is still shown.
* fix(security): codex round 3 — mirror the resolver for root-relative logo paths (GHSA-29vm)
The logo diagnostic skipped the `<STORAGE>/<value>` candidates whenever
path.isAbsolute(value) was true. That test cannot distinguish a multer disk
path from a root-relative URL such as `/custom/logo.png`, and for the URL form
resolveLogoFile.generateCandidates() does try `<STORAGE>/custom/logo.png` and
can resolve it — so the endpoint reported "no source candidate exists" about a
logo that renders fine, and collapsed the configured value to its basename.
The stripped joins are now built unconditionally, exactly as the resolver does.
Disclosure stays closed: every candidate still passes the containment filter and
redact() rewrites survivors to `<STORAGE>/…`, never an absolute host path.
Claude-Session: https://claude.ai/code/session_01F211U4dDbEj4zXiyKbi9me
* fix(security): gate the logo stripped-joins on containment, not isAbsolute (GHSA-29vm)
The previous commit dropped the isAbsolute() gate entirely and regressed
logoDiagnostic's own disclosure assertion: for a genuine multer disk path,
path.join(root, value-minus-leading-slash) yields
`<STORAGE>/tmp/…/storage/custom/logo.png`, and redact() only rewrites the
LEADING root — so the inner absolute path went straight back into the payload.
The right discriminator is not "is this absolute" (which cannot separate a disk
path from a root-relative URL) but "does the value already resolve inside a
storage root". If it does, it is a real disk path, the raw candidate already
covers it, and the stripped join is the double-prefixed junk that can never
exist. If it does not — the `/custom/logo.png` URL form — the stripped join is
exactly what resolveLogoFile resolves, and is shown.
Covered by a new case asserting both halves: the candidate appears for the URL
form, and the payload still contains neither the storage root nor cwd.
Claude-Session: https://claude.ai/code/session_01F211U4dDbEj4zXiyKbi9me
---------
Co-authored-by: Paul Nothaft <paul@MacStudio-von-Paul.local>
This commit is contained in:
@@ -0,0 +1,123 @@
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/**
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* Logo diagnostic must not leak the filesystem layout, and must mirror what
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* resolveLogoFile actually tries (GHSA-29vm, codex round 2).
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*
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* Round 1 relativised `resolvedTo` and the candidate paths but still echoed
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* `sources[].value` verbatim — and branding_logo_path is stored ABSOLUTE by
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* multer, so the layout went out anyway. It also dropped the raw-absolute
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* candidate, which the resolver retains (subject to containment), making the
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* diagnostic report every candidate as missing for a legitimately contained
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* absolute logo while `resolvedTo` named the file.
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*/
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const path = require('path');
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const fs = require('fs');
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const os = require('os');
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process.env.NODE_ENV = 'test';
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process.env.TEST_DATABASE_PATH = path.join(
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fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-logodiag-')), 'db.sqlite',
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);
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process.env.JWT_SECRET = process.env.JWT_SECRET || 'logodiag-test-secret';
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const request = require('supertest');
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const express = require('express');
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const bcrypt = require('bcrypt');
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const jwt = require('jsonwebtoken');
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const { bootCrmDb, seedMinimal } = require('../integration/helpers/crmDb');
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describe('logo diagnostic disclosure (GHSA-29vm)', () => {
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let db; let cleanup; let app; let token;
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// bootCrmDb() sets STORAGE_PATH itself, so resolve these AFTER it runs.
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let STORAGE; let logoDir; let logoPath;
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beforeAll(async () => {
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({ db, cleanup } = await bootCrmDb());
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await seedMinimal(db);
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// A legitimately contained absolute logo in a NON-standard storage subdir.
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STORAGE = process.env.STORAGE_PATH;
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logoDir = path.join(STORAGE, 'custom');
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logoPath = path.join(logoDir, 'logo.png');
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fs.mkdirSync(logoDir, { recursive: true });
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fs.writeFileSync(logoPath, 'png');
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const setting = { setting_key: 'branding_logo_path', setting_value: JSON.stringify(logoPath), setting_type: 'branding' };
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const existing = await db('app_settings').where({ setting_key: 'branding_logo_path' }).first();
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if (existing) await db('app_settings').where({ setting_key: 'branding_logo_path' }).update(setting);
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else await db('app_settings').insert(setting);
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const role = await db('roles').where({ name: 'super_admin' }).first();
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const r = await db('admin_users').insert({
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username: 'diag-admin', email: 'diag@example.com',
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password_hash: await bcrypt.hash('Passw0rd!', 4),
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role_id: role.id, is_active: 1,
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created_at: new Date(), updated_at: new Date(),
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}).returning('id');
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const id = r[0]?.id ?? r[0];
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token = jwt.sign(
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{ id, username: 'diag-admin', type: 'admin', role: 'super_admin', loginTime: Date.now() },
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process.env.JWT_SECRET, { expiresIn: '1h', issuer: 'picpeak-auth' },
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);
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app = express();
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app.use(express.json());
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app.use('/api/admin/business-profile', require('../../src/routes/adminBusinessProfile'));
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}, 120000);
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afterAll(async () => { if (cleanup) await cleanup(); });
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it('does not leak absolute paths, cwd or storage root anywhere in the payload', async () => {
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const res = await request(app)
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.get('/api/admin/business-profile/logo-diagnostic')
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.set('Authorization', `Bearer ${token}`);
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expect(res.status).toBe(200);
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const body = JSON.stringify(res.body);
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expect(body).not.toContain(STORAGE);
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expect(body).not.toContain(process.cwd());
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expect(res.body.storageRoot).toBeUndefined();
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expect(res.body.cwd).toBeUndefined();
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});
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it('still finds a contained absolute logo outside the standard subdirs', async () => {
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const res = await request(app)
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.get('/api/admin/business-profile/logo-diagnostic')
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.set('Authorization', `Bearer ${token}`);
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const source = res.body.sources.find((s) => s.label === 'app_settings.branding_logo_path');
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expect(source).toBeTruthy();
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// The resolver keeps the contained absolute candidate, so the diagnostic
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// must show it existing rather than reporting everything missing.
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expect(source.candidates.some((c) => c.exists)).toBe(true);
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expect(res.body.resolvedTo).toMatch(/^<STORAGE>\//);
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});
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it('shows the <STORAGE>/<value> candidate for a ROOT-RELATIVE logo URL (round 3)', async () => {
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// `/custom/logo.png` is a URL, not a disk path, but path.isAbsolute() says
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// true for both. Gating the stripped joins on isAbsolute() therefore hid
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// `<STORAGE>/custom/logo.png` — a candidate resolveLogoFile does try and
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// can resolve — so the diagnostic claimed nothing existed for a logo that
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// renders fine, and collapsed the configured value to its basename.
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await db('app_settings').where({ setting_key: 'branding_logo_path' })
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.update({ setting_value: JSON.stringify('/custom/logo.png') });
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const res = await request(app)
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.get('/api/admin/business-profile/logo-diagnostic')
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.set('Authorization', `Bearer ${token}`);
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expect(res.status).toBe(200);
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const source = res.body.sources.find((s) => s.label === 'app_settings.branding_logo_path');
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expect(source.candidates.some((c) => c.path === '<STORAGE>/custom/logo.png' && c.exists)).toBe(true);
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// …and the disclosure guarantee still holds for this shape.
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const body = JSON.stringify(res.body);
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expect(body).not.toContain(STORAGE);
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expect(body).not.toContain(process.cwd());
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await db('app_settings').where({ setting_key: 'branding_logo_path' })
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.update({ setting_value: JSON.stringify(logoPath) });
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});
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});
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@@ -0,0 +1,91 @@
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/**
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* Brand-token substitution must not reintroduce markup after sanitization
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* (GHSA-j347).
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*
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* buildCachedPayload sanitizes the operator's HTML and THEN calls
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* applyBrandTokens on the result, which did a plain `String.replace` with no
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* escaping. The default templates interpolate tokens into text and into quoted
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* attributes (`<img src="{{brand_logo_url}}" alt="{{company_name}} logo">`,
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* `href="mailto:{{support_email}}"`), so a token value could close the
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* attribute and inject markup into the public origin.
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*
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* The writer is settings.edit (super_admin only) and the CSP blocks inline
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* script, so this is defence-in-depth rather than a live RCE — but the
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* sanitize-then-substitute ordering is a real bug either way.
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*/
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const path = require('path');
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const fs = require('fs');
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const os = require('os');
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process.env.NODE_ENV = 'test';
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process.env.TEST_DATABASE_PATH = path.join(
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fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-brandtok-')), 'db.sqlite',
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);
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process.env.JWT_SECRET = process.env.JWT_SECRET || 'brandtok-test-secret';
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const { _internal } = require('../../src/services/publicSiteService');
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// applyBrandTokens / sanitizeBrandUrl are module-private; the service exports
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// them under _internal for testing (see publicSiteService module.exports).
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const { applyBrandTokens, sanitizeBrandUrl } = _internal || {};
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const maybe = applyBrandTokens ? describe : describe.skip;
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maybe('applyBrandTokens escaping (GHSA-j347)', () => {
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it('escapes markup in a text-position token', () => {
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const out = applyBrandTokens('<p>{{company_name}}</p>', {
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companyName: '<script>alert(1)</script>',
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});
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expect(out).not.toContain('<script>');
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expect(out).toContain('<script>');
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});
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it('escapes a quote that would break out of an attribute', () => {
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const out = applyBrandTokens(
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'<img src="/x.png" alt="{{company_name}} logo">',
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{ companyName: '" onerror="alert(1)' },
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);
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// The injected quotes must be entity-encoded, so the payload stays INSIDE
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// the alt value as text instead of terminating it and forming a real
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// onerror attribute. (`onerror=` still appears as literal characters —
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// that is inert; what matters is that no raw `"` closed the attribute.)
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expect(out).not.toContain('" onerror="');
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expect(out).toContain('" onerror="');
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});
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it('escapes the logo url token used inside src="..."', () => {
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const out = applyBrandTokens('<img src="{{brand_logo_url}}">', {
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logoUrl: '" onerror="alert(1)',
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});
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expect(out).not.toContain('" onerror="');
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expect(out).toContain('"');
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});
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it('leaves ordinary values readable', () => {
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const out = applyBrandTokens('<p>{{company_name}}</p>', { companyName: 'Acme Photos' });
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expect(out).toContain('Acme Photos');
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});
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});
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const maybeUrl = sanitizeBrandUrl ? describe : describe.skip;
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maybeUrl('sanitizeBrandUrl scheme allowlist (GHSA-j347)', () => {
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it('rejects javascript: regardless of case', () => {
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expect(sanitizeBrandUrl('javascript:alert(1)')).toBeNull();
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// The old check was a case-sensitive startsWith and missed these.
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expect(sanitizeBrandUrl('JavaScript:alert(1)')).toBeNull();
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expect(sanitizeBrandUrl(' JAVASCRIPT:alert(1)')).toBeNull();
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});
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it('rejects other non-http schemes', () => {
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expect(sanitizeBrandUrl('data:text/html;base64,PHN2Zz4=')).toBeNull();
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expect(sanitizeBrandUrl('vbscript:msgbox(1)')).toBeNull();
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});
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it('keeps http(s) and relative logo paths working', () => {
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expect(sanitizeBrandUrl('https://cdn.example.com/logo.png'))
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.toBe('https://cdn.example.com/logo.png');
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expect(sanitizeBrandUrl('/uploads/logos/logo.png')).toBe('/uploads/logos/logo.png');
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});
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});
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@@ -52,7 +52,11 @@ describe('publicSiteService', () => {
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const payload = await getPublicSitePayload({ bypassCache: true });
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expect(payload.enabled).toBe(true);
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expect(payload.html).toContain('<h1>Willow & Pine Studio</h1>');
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// Brand tokens are HTML-escaped on substitution now (GHSA-j347), so a bare
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// `&` in the company name is emitted as the `&` entity. That renders
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// identically in a browser — it is the correctly-encoded form — but the raw
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// payload string differs from the pre-fix output.
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expect(payload.html).toContain('<h1>Willow & Pine Studio</h1>');
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expect(payload.html).not.toContain('<script');
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expect(payload.baseCss.length).toBeGreaterThan(0);
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expect(payload.branding.companyName).toBe('Willow & Pine Studio');
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@@ -249,33 +249,84 @@ router.get(
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const brandingLogoUrl = await getAppSetting('branding_logo_url');
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const resolved = await resolveLogoFile(profile);
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// GHSA-29vm: report candidates RELATIVE to the storage roots rather than
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// echoing absolute container paths and process.cwd(). This endpoint exists
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// to answer "which candidate did/didn't exist", which relative paths answer
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// just as well without handing out the filesystem layout.
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const cwdStorage = path.join(process.cwd(), 'storage');
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const relativise = (p) => {
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for (const [name, root] of [['STORAGE', storageRoot], ['CWD_STORAGE', cwdStorage]]) {
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const rel = path.relative(root, p);
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if (rel && !rel.startsWith('..') && !path.isAbsolute(rel)) {
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return `<${name}>/${rel.split(path.sep).join('/')}`;
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}
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}
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return path.basename(p);
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};
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const inspect = (label, raw) => {
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const value = (raw || '').toString().trim();
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if (!value) return { label, value: null, candidates: [] };
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const stripped = value.replace(/^\/+/, '');
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const baseName = path.basename(value);
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// Mirrors resolveLogoFile's candidate list EXACTLY. It keeps the raw
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// absolute value as a candidate (multer stores branding_logo_path
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// absolute) and lets the storage-root containment filter reject it when
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// it points outside — so the diagnostic must include it too, or a
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// legitimately-contained absolute logo shows every candidate as missing
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// while resolvedTo names the file.
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// The stripped joins (`<ROOT>/<value-minus-leading-slash>`) are gated on
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// containment, NOT on path.isAbsolute(). isAbsolute() cannot tell a
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// multer disk path from a root-relative URL like `/custom/logo.png`, and
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// for the URL form `<STORAGE>/custom/logo.png` is a file the resolver
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// genuinely returns — skipping it made this endpoint report "no source
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// candidate exists" about a logo that renders fine.
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//
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// The gate is instead: does the raw value ALREADY resolve inside a
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// storage root? If so it is a real disk path, the raw candidate below
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// covers it, and the stripped join would only produce a double-prefixed
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// path that can never exist while re-embedding the absolute path
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// GHSA-29vm exists to stop echoing (redact() strips only the leading
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// root, so the inner one would survive).
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const valueInsideRoot = path.isAbsolute(value) && [
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path.resolve(storageRoot), path.resolve(cwdStorage),
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].some((root) => {
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const r = path.resolve(value);
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return r === root || r.startsWith(root + path.sep);
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});
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const strippedJoins = valueInsideRoot
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? []
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: [path.join(storageRoot, stripped), path.join(cwdStorage, stripped)];
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const candidates = [
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path.isAbsolute(value) ? value : null,
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path.join(storageRoot, stripped),
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...(path.isAbsolute(value) ? [value] : []),
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...strippedJoins,
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path.join(storageRoot, 'uploads', 'logos', baseName),
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path.join(storageRoot, 'branding', baseName),
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path.join(process.cwd(), 'storage', stripped),
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path.join(process.cwd(), 'storage', 'uploads', 'logos', baseName),
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path.join(process.cwd(), 'storage', 'branding', baseName),
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].filter(Boolean);
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path.join(cwdStorage, 'uploads', 'logos', baseName),
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path.join(cwdStorage, 'branding', baseName),
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];
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const roots = [path.resolve(storageRoot), path.resolve(cwdStorage)];
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const contained = candidates.filter((c) => {
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const r = path.resolve(c);
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return roots.some((root) => r === root || r.startsWith(root + path.sep));
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});
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return {
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label, value,
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candidates: [...new Set(candidates)].map((p) => ({
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path: p,
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label,
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// GHSA-29vm: branding_logo_path is stored absolute by multer, so
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// echoing it back handed out the filesystem layout just as the
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// candidate paths did. Relativise it the same way.
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value: path.isAbsolute(value) ? relativise(value) : value,
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candidates: [...new Set(contained)].map((p) => ({
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path: relativise(p),
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exists: (() => { try { return fs.existsSync(p) && fs.statSync(p).isFile(); } catch { return false; } })(),
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})),
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};
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};
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return successResponse(res, {
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storageRoot,
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cwd: process.cwd(),
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resolvedTo: resolved,
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// Absolute storageRoot / cwd deliberately omitted (GHSA-29vm); the
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// candidate paths below are shown relative to <STORAGE>/<CWD_STORAGE>.
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resolvedTo: resolved ? relativise(resolved) : null,
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sources: [
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inspect('business_profile.logo_path', profile?.logo_path),
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inspect('app_settings.branding_logo_path', brandingDiskPath),
|
||||
|
||||
@@ -63,13 +63,40 @@ function sanitizeBrandUrl(url) {
|
||||
}
|
||||
|
||||
const trimmed = url.trim();
|
||||
if (trimmed.startsWith('javascript:')) {
|
||||
// GHSA-j347: the old check was a case-sensitive literal `javascript:`, which
|
||||
// `JavaScript:` walks straight past. Allowlist the schemes a logo URL can
|
||||
// legitimately use instead of blocklisting one spelling. Relative paths (the
|
||||
// common case — /uploads/logos/x.png) carry no scheme and are unaffected.
|
||||
const scheme = trimmed.match(/^\s*([a-z][a-z0-9+.-]*)\s*:/i);
|
||||
if (scheme && !['http', 'https'].includes(scheme[1].toLowerCase())) {
|
||||
return null;
|
||||
}
|
||||
|
||||
return trimmed;
|
||||
}
|
||||
|
||||
/**
|
||||
* HTML-escape a brand token value (GHSA-j347).
|
||||
*
|
||||
* Brand tokens are substituted AFTER sanitize-html runs, so markup in a token
|
||||
* value reaches the public page unfiltered. The default templates interpolate
|
||||
* tokens into text AND into quoted attributes
|
||||
* (`<img src="{{brand_logo_url}}" alt="{{company_name}} logo">`,
|
||||
* `href="mailto:{{support_email}}"`), so escaping the five HTML-significant
|
||||
* characters is correct in both positions.
|
||||
*
|
||||
* Mirrors galleryOgService's escapeHtml, which already handles this correctly.
|
||||
*/
|
||||
function escapeTokenValue(value) {
|
||||
if (value === null || value === undefined) return '';
|
||||
return String(value)
|
||||
.replace(/&/g, '&')
|
||||
.replace(/</g, '<')
|
||||
.replace(/>/g, '>')
|
||||
.replace(/"/g, '"')
|
||||
.replace(/'/g, ''');
|
||||
}
|
||||
|
||||
async function fetchBrandingContext() {
|
||||
const rows = await db('app_settings')
|
||||
.whereIn('setting_key', [
|
||||
@@ -265,13 +292,18 @@ function applyBrandTokens(html, branding) {
|
||||
brand_text_hex: branding.colors?.text || '#0f172a'
|
||||
};
|
||||
|
||||
// Escape on substitution (GHSA-j347) — this runs AFTER sanitizeHtmlPayload,
|
||||
// so an unescaped value would reintroduce raw markup into the public origin.
|
||||
return html.replace(/\{\{\s*(company_name|company_tagline|support_email|brand_logo_url|brand_primary_hex|brand_accent_hex|brand_background_hex|brand_text_hex)\s*\}\}/gi,
|
||||
(_, key) => tokens[key] || '');
|
||||
(_, key) => escapeTokenValue(tokens[key] || ''));
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
getPublicSitePayload,
|
||||
clearPublicSiteCache,
|
||||
getDefaultPublicSitePayload,
|
||||
getRawPublicSiteSettings
|
||||
getRawPublicSiteSettings,
|
||||
// Exposed for tests only — the token-escaping and URL-scheme rules
|
||||
// (GHSA-j347) are worth pinning directly rather than through the cache.
|
||||
_internal: { applyBrandTokens, sanitizeBrandUrl }
|
||||
};
|
||||
|
||||
@@ -59,6 +59,13 @@ function buildAdapter({ baseUrl, websiteId, apiKey }) {
|
||||
Authorization: `Bearer ${apiKey}`,
|
||||
Accept: 'application/json',
|
||||
},
|
||||
// Never follow a redirect (GHSA-mw76). undici only strips
|
||||
// Authorization/Cookie/Proxy-Authorization/Host when a redirect
|
||||
// crosses origins — a custom key header would be replayed verbatim to
|
||||
// whatever host the tracker redirects to. Self-hosted trackers on
|
||||
// private addresses keep working; only a proxy that 301s is affected,
|
||||
// and that surfaces as a clear logged error rather than a silent leak.
|
||||
redirect: 'error',
|
||||
signal: controller.signal,
|
||||
});
|
||||
} catch (err) {
|
||||
|
||||
@@ -41,6 +41,13 @@ function buildAdapter({ baseUrl, websiteId, apiKey }) {
|
||||
'x-umami-api-key': apiKey,
|
||||
Accept: 'application/json',
|
||||
},
|
||||
// Never follow a redirect (GHSA-mw76). undici only strips
|
||||
// Authorization/Cookie/Proxy-Authorization/Host when a redirect
|
||||
// crosses origins — a custom key header would be replayed verbatim to
|
||||
// whatever host the tracker redirects to. Self-hosted trackers on
|
||||
// private addresses keep working; only a proxy that 301s is affected,
|
||||
// and that surfaces as a clear logged error rather than a silent leak.
|
||||
redirect: 'error',
|
||||
signal: controller.signal,
|
||||
});
|
||||
} catch (err) {
|
||||
|
||||
Reference in New Issue
Block a user