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.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-9f2b45e4c1 advisory.

    Update to 9.13.0.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-c10ed2f3b7 advisory.

    Update to 9.13.0.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-73249)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
339190	Fedora 44 : calibre (2026-9f2b45e4c1)	Nessus	Fedora Local Security Checks	Local	high
338790	Fedora 43 : calibre (2026-c10ed2f3b7)	Nessus	Fedora Local Security Checks	Local	high
334907	Linux Distros Unpatched Vulnerability : CVE-2026-73249	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-73249

high

Tenable Plugins

high

high

high