{"id":"CVE-2026-73249","aliases":["DEBIAN-CVE-2026-73249","EUVD-2026-57015","GHSA-5x64-w63v-x2g6","UBUNTU-CVE-2026-73249"],"status":"published","title":"calibre Content Server `/book-update-annotations` Missing Write Authorization Check Allows Unauthorized Annotation Modification","description":"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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00436,"percentile":0.38194,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-862"],"published":"2026-08-11T21:58:43Z","modified":"2026-10-28T02:30:50Z","fixes":[{"ecosystem":"Debian:14","package":"calibre","fixed_in":["9.12.0+ds+~0.10.6-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"calibre","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.13.0+repack-2","6.13.0+repack-2+deb12u1","6.13.0+repack-2+deb12u10","6.13.0+repack-2+deb12u2","6.13.0+repack-2+deb12u3","6.13.0+repack-2+deb12u4","6.13.0+repack-2+deb12u5","6.13.0+repack-2+deb12u6","6.13.0+repack-2+deb12u7","6.13.0+repack-2+deb12u8","6.13.0+repack-2+deb12u9","6.14.0-1","6.14.1-1","6.15.0-1","6.15.1-1","6.15.1-2","6.15.1-3","6.15.1-4","6.16.0-1","6.17.0-1","6.18.1-1","6.18.1-2","6.18.1-3","6.19.1-1","6.20.0-1","6.21.0-1","6.21.0-2","6.22.0-1","6.23.0-1","6.23.0-2","6.24.0+ds-1","6.24.0-1","6.24.0-2","6.25.0+ds-1","6.26.0+ds-1","6.27.0+ds-1","6.28.0+ds-1","6.28.1+ds-1","6.29.0+ds-1","7.0.0+ds-1","7.1.0+ds-1","7.1.0+ds-2","7.10.0+ds-1","7.11.0+ds-1","7.12.0+ds-1","7.12.0+ds-2","7.12.0+ds-3","7.13.0+ds-1","7.13.0+ds-2","7.14.0+ds-1","7.15.0+ds-1","7.16.0+ds-1","7.16.0+ds-2","7.16.0+ds-3","7.17.0+ds-1","7.17.0+ds-2","7.17.0+ds-3","7.17.0+ds-4","7.18.0+ds-1","7.19.0+ds-1","7.19.0+ds-2","7.2.0+ds-1","7.20.0+ds-1","7.21.0+ds-1","7.21.0+ds-2","7.22.0+ds-1","7.22.0+ds-2","7.23.0+ds-1","7.23.0+ds-2","7.24.0+ds-1","7.24.0+ds-2","7.25.0+ds-1","7.26.0+ds-1","7.26.0+ds-2","7.26.0+ds-3","7.26.0+ds-4","7.3.0+ds-1","7.4.0+ds-1","7.5.1+ds-1","7.5.1+ds-2","7.5.1+ds-3","7.6.0+ds-1","7.7.0+ds-1","7.7.0+ds-2","7.8.0+ds1-1","7.8.0+ds1-2","7.8.0+ds2-1","7.9.0+ds-1","7.9.0+ds-2","8.0.0+ds-1","8.0.1+ds-1","8.1.0+ds-1","8.1.1+ds-1","8.10.0+ds-1","8.10.0+ds-2","8.10.0+ds-3","8.11.0+ds+~0.10.5-1","8.11.1+ds+~0.10.5-1","8.11.1+ds+~0.10.5-2","8.11.1+ds+~0.10.5-3","8.12.0+ds+~0.10.5-1","8.13.0+ds+~0.10.5-1","8.13.0+ds+~0.10.5-2","8.13.0+ds+~0.10.5-3","8.14.0+ds+~0.10.5-1","8.14.0+ds+~0.10.5-1~bpo13+1","8.15.0+ds+~0.10.5-1","8.15.0+ds+~0.10.5-1~bpo13+1","8.15.0+ds+~0.10.5-2","8.16.0+ds+~0.10.5-1","8.16.0+ds+~0.10.5-2","8.16.1+ds+~0.10.5-1","8.16.2+ds+~0.10.5-1","8.16.2+ds+~0.10.5-2","8.16.2+ds+~0.10.5-3","8.16.2+ds+~0.10.5-3~bpo13+1","8.2.1+ds-1","8.2.100+ds-1","8.3.0+ds-1","8.4.0+ds-1","8.4.0+ds1-1~exp1","8.5.0+ds-1","8.6.0+ds-1","8.7.0+ds-1","8.8.0+ds-1","8.8.0+ds-2","8.8.0+ds-2+gcc15","8.8.0+ds-3","8.9.0+ds-1","8.9.0+ds-2","8.9.0+ds-3","8.9.0+ds-4","9.0.0+ds+~0.10.5-1","9.1.0+ds+~0.10.5-1","9.10.0+ds+~0.10.6-1","9.10.0+ds+~0.10.6-2","9.11.0+ds+~0.10.6-1","9.11.0+ds+~0.10.6-2","9.12.0+ds+~0.10.6-1","9.13.0+ds+~0.10.6-1","9.14.0+ds+~0.10.6-1","9.14.0+ds+~0.10.6-2","9.15.0+ds+~1.1.2-1","9.15.0+ds+~1.1.2-2","9.15.0+ds+~1.1.2-3","9.16.0+ds+~1.1.2-1","9.17.0+ds+~1.1.2-1","9.2.0+ds+~0.10.5-1","9.2.1+ds+~0.10.5-1","9.2.1+ds+~0.10.5-2","9.3.0+ds+~0.10.5-1","9.3.1+ds+~0.10.5-1","9.4.0+ds+~0.10.5-1","9.5.0+ds+~0.10.5-1","9.6.0+ds+~0.10.5-1","9.6.0+ds+~0.10.5-2","9.6.0+ds+~0.10.5-3","9.6.0+ds+~0.10.5-4","9.6.0+ds+~0.10.5-5","9.6.0+ds+~0.10.5-6","9.7.0+ds+~0.10.5-1","9.7.0+ds+~0.10.5-2","9.8.0+ds+~0.10.5-1","9.8.0+ds+~0.10.5-2","9.8.0+ds+~0.10.5-3","9.8.0+ds+~0.10.5-4","9.8.0+ds+~0.10.5-5","9.8.0+ds+~0.10.6-1","9.8.0+ds+~0.10.6-2","9.9.0+ds+~0.10.6-1"]},{"source":"osv","ecosystem":"Debian:13","package":"calibre","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.10.0+ds-1","8.10.0+ds-2","8.10.0+ds-3","8.11.0+ds+~0.10.5-1","8.11.1+ds+~0.10.5-1","8.11.1+ds+~0.10.5-2","8.11.1+ds+~0.10.5-3","8.12.0+ds+~0.10.5-1","8.13.0+ds+~0.10.5-1","8.13.0+ds+~0.10.5-2","8.13.0+ds+~0.10.5-3","8.14.0+ds+~0.10.5-1","8.14.0+ds+~0.10.5-1~bpo13+1","8.15.0+ds+~0.10.5-1","8.15.0+ds+~0.10.5-1~bpo13+1","8.15.0+ds+~0.10.5-2","8.16.0+ds+~0.10.5-1","8.16.0+ds+~0.10.5-2","8.16.1+ds+~0.10.5-1","8.16.2+ds+~0.10.5-1","8.16.2+ds+~0.10.5-2","8.16.2+ds+~0.10.5-3","8.16.2+ds+~0.10.5-3~bpo13+1","8.5.0+ds-1","8.5.0+ds-1+deb13u1","8.5.0+ds-1+deb13u2","8.5.0+ds-1+deb13u3","8.6.0+ds-1","8.7.0+ds-1","8.8.0+ds-1","8.8.0+ds-2","8.8.0+ds-2+gcc15","8.8.0+ds-3","8.9.0+ds-1","8.9.0+ds-2","8.9.0+ds-3","8.9.0+ds-4","9.0.0+ds+~0.10.5-1","9.1.0+ds+~0.10.5-1","9.10.0+ds+~0.10.6-1","9.10.0+ds+~0.10.6-2","9.11.0+ds+~0.10.6-1","9.11.0+ds+~0.10.6-2","9.12.0+ds+~0.10.6-1","9.13.0+ds+~0.10.6-1","9.14.0+ds+~0.10.6-1","9.14.0+ds+~0.10.6-2","9.15.0+ds+~1.1.2-1","9.15.0+ds+~1.1.2-2","9.15.0+ds+~1.1.2-3","9.16.0+ds+~1.1.2-1","9.17.0+ds+~1.1.2-1","9.2.0+ds+~0.10.5-1","9.2.1+ds+~0.10.5-1","9.2.1+ds+~0.10.5-2","9.3.0+ds+~0.10.5-1","9.3.1+ds+~0.10.5-1","9.4.0+ds+~0.10.5-1","9.5.0+ds+~0.10.5-1","9.6.0+ds+~0.10.5-1","9.6.0+ds+~0.10.5-2","9.6.0+ds+~0.10.5-3","9.6.0+ds+~0.10.5-4","9.6.0+ds+~0.10.5-5","9.6.0+ds+~0.10.5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CVE-2026-73249","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-73249","title":"calibre Content Server `/book-update-annotations` Missing Write Authorization Check Allows Unauthorized Annotation Modification","description":"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.","status":"published","published":"2026-08-11T21:58:43.415Z","modified":"2026-08-12T12:43:31.031Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T13:43:33.766176Z"}],"euvd":[{"id":"EUVD-2026-57015","description":"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.","status":"published","published":"2026-08-11T21:58:43Z","modified":"2026-08-12T12:43:31Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T18:01:58.638592Z"}],"nvd":[{"id":"CVE-2026-73249","description":"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.","status":"published","published":"2026-08-11T22:19:05.687Z","modified":"2026-10-24T15:10:00.19Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:36.880938Z"}],"osv":[{"id":"CVE-2026-73249","title":"calibre Content Server `/book-update-annotations` Missing Write Authorization Check Allows Unauthorized Annotation Modification","description":"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.","status":"published","published":"2026-08-11T21:58:43.415Z","modified":"2026-10-28T02:30:50.299737345Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:45:16.365946Z"},{"id":"DEBIAN-CVE-2026-73249","description":"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.","status":"published","published":"2026-08-11T22:19:05.687Z","modified":"2026-10-25T09:47:39.165888272Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:46:02.499355Z"},{"id":"UBUNTU-CVE-2026-73249","description":"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.","status":"published","published":"2026-08-11T22:19:00Z","modified":"2026-10-17T12:55:30.707157221Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T16:57:08.628462Z"}]}}