Auth/access-control audit fixes (all pre-existing on main; none are
regressions). Verified end-to-end where noted.
HIGH
- Thumbnail enumeration: photoAuth granted any gallery token access to any
flat /thumbnails/thumb_* file, so a visitor to one gallery could
enumerate another (password-protected) gallery's entire thumbnail set.
Scope thumbnail access to the token's event via photos.thumbnail_path.
Live-verified: cross-event fetch now 404s, own-event still 200s.
- Bulk ownership bypass: bulk-archive/bulk-delete acted on body-supplied
event ids with no owner filter (single-event routes enforce
requireEventOwnership), letting admin/editor archive or cascade-delete
any event. Add filterOwnedEventIds; also guard rename + import-external;
tighten photo-retry to scope admin (not just editor). Fix misleading
bulk-delete comment.
MED
- verifyGalleryAccess never checked decoded.type — assert 'gallery'
instead of relying on other token types incidentally lacking eventId.
- secure-images generate-token/secure-download missing denySlideshowToken
(#646 bypass): a leaked slideshow token could download originals.
- Frontend: AuthenticatedImage + api.ts attached the gallery bearer token
to absolute/external URLs — only attach to relative same-app paths.
LOW hardening
- Pin algorithms:['HS256'] on all auth-boundary jwt.verify calls.
- crypto.timingSafeEqual for share-token + HMAC compares (utils/timingSafe).
- Remove dead photoAuth import in galleryFeedback.
Tests: new regression suites for thumbnail scoping + filterOwnedEventIds;
fixed verifyGalleryAccess.customerRevoke fixture (real customer tokens
carry type:'gallery'). Full backend suite at the pre-existing baseline
(5 suites/27 tests fail on main too), zero new failures.
Paul Nothaft
081f3edcdf