{"id":"CVE-2026-73249","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-73249","summary":"calibre is an e-book manager. Prior to 9.12.0, the calibre Content Server endpoint POST /book-update-annotations/{library_id}/{book_id}/{fmt} in src/calibre/srv/books.py omits needs_db_write=True,…","details":"calibre is an e-book manager. Prior to 9.12.0, the calibre Content Server endpoint POST /book-update-annotations/{library_id}/{book_id}/{fmt} in src/calibre/srv/books.py omits needs_db_write=True, causing Router.dispatch() to skip ctx.check_for_write_access() before update_annotations() passes attacker-controlled JSON to db.merge_annotations_for_book(), which allows a readonly user or an anonymous user on an unauthenticated deployment to persist unauthorized book annotation changes. This issue is fixed in version 9.12.0.","published":"2026-08-11T22:19:05.687","modified":"2026-08-11T22:19:05.687","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/kovidgoyal/calibre/commit/71295e8b62801e1ccecaa4fac47e6942f11cfe1e","label":"kovidgoyal/calibre@71295e8"},"references":[{"type":"WEB","url":"https://github.com/kovidgoyal/calibre/commit/71295e8b62801e1ccecaa4fac47e6942f11cfe1e"},{"type":"WEB","url":"https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0"},{"type":"WEB","url":"https://github.com/kovidgoyal/calibre/security/advisories/GHSA-5x64-w63v-x2g6"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-11T22:19:05.687"}}