CVE-2026-73249

HighCVSS 7.5/10Last modified Oct 24, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-862

Affected software

No affected versions have been published.

Timeline

Published
Aug 11, 2026
Last modified
Oct 24, 2026
NVD status
Deferred

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CVE-2026-73249: High severity, CVSS 7.5 | Vulnix