calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.6.0, a path traversal vulnerability exists in Calibre' handling of images in Markdown and other similar text-based files allowing an attacker to include arbitrary files from the file system into the converted book. Additionally, missing authentication and server-side request forgery in the background-image endpoint in the ebook reader web view allow the files to be exfiltrated without additional interaction. Version 9.6.0 contains a fix.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/kovidgoyal/calibre/security/advisories/GHSA-h3p4-m74f-43g6 Exploit, Vendor Advisory
- https://github.com/kovidgoyal/calibre/security/advisories/GHSA-h3p4-m74f-43g6 Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.2 · calibre-ebookNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:calibre-ebook:calibre:*:*:*:*:*:*:*:*
References 2
- https://github.com/kovidgoyal/calibre/security/advisories/GHSA-h3p4-m74f-43g6 Exploit, Vendor Advisory
- https://github.com/kovidgoyal/calibre/security/advisories/GHSA-h3p4-m74f-43g6 Exploit, Vendor Advisory