high7.5
CVE-2026-73249
calibre is an e-book manager.
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| Calibre Is An E-Book Manager. | before 9.12.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.