| Name | CVE-2026-25636 |
| Description | calibre is an e-book manager. In 9.1.0 and earlier, a path traversal vulnerability in Calibre's EPUB conversion allows a malicious EPUB file to corrupt arbitrary existing files writable by the Calibre process. During conversion, Calibre resolves CipherReference URI from META-INF/encryption.xml to an absolute filesystem path and opens it in read-write mode, even when it points outside the conversion extraction directory. This vulnerability is fixed in 9.2.0. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| calibre (PTS) | bullseye | 5.12.0+dfsg-1+deb11u2 | vulnerable |
| bullseye (security) | 5.12.0+dfsg-1+deb11u3 | vulnerable | |
| bookworm | 6.13.0+repack-2+deb12u5 | vulnerable | |
| trixie | 8.5.0+ds-1+deb13u1 | vulnerable | |
| forky | 8.16.2+ds+~0.10.5-3 | vulnerable | |
| sid | 9.4.0+ds+~0.10.5-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| calibre | source | (unstable) | 9.2.0+ds+~0.10.5-1 |
[trixie] - calibre <no-dsa> (Will be fixed via point update)
[bookworm] - calibre <no-dsa> (Will be fixed via point update)
[bullseye] - calibre <postponed> (Can be piggy-back'd with future DLA)
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-8r26-m7j5-hm29
Fixed by: https://github.com/kovidgoyal/calibre/commit/9484ea82c6ab226c18e6ca5aa000fa16de598726 (v9.2.0)