CVE-2026-73249

A flaw was found in the calibre Content Server. This vulnerability allows a remote attacker, including unauthenticated users, to bypass authorization checks when interacting with the /book-update-annotations endpoint. By sending specially crafted JSON data, an attacker can modify book annotations...

Linux Distros Unpatched Vulnerability : CVE-2026-73249

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/libraryid/bookid/fmt in src/calibre/srv/books....

CVE-2026-73249

calibre is an e-book manager. Prior to 9.12.0, the calibre Content Server endpoint POST /book-update-annotations/libraryid/bookid/fmt in src/calibre/srv/books.py omits needsdbwrite=True, causing Router.dispatch to skip ctx.checkforwriteaccess before updateannotations passes attacker-controlled JS...

CVE-2026-73249

calibre is an e-book manager. Prior to 9.12.0, the calibre Content Server endpoint POST /book-update-annotations/libraryid/bookid/fmt in src/calibre/srv/books.py omits needsdbwrite=True, causing Router.dispatch to skip ctx.checkforwriteaccess before updateannotations passes attacker-controlled JS...