calibre: calibre is an e-book manager
CVE-2026-73249 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-73249, released August 13, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| calibre · Debian 14 | 9.12.0+ds+~0.10.6-1 | DEBIAN-CVE-2026-73249 | Aug 13, 2026 |
| calibre · Fedora 43 | 9.13.0-1.fc43 | FEDORA-2026-C10ED2F3B7 | Aug 16, 2026 |
| calibre-debuginfo · Fedora 43 | 9.13.0-1.fc43 | FEDORA-2026-C10ED2F3B7 | Aug 16, 2026 |
| calibre-debugsource · Fedora 43 | 9.13.0-1.fc43 | FEDORA-2026-C10ED2F3B7 | Aug 16, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.