CVE catalog
CVE-2026-25731
calibre: CVE-2026-25731
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.28% · Oct 25, 2026
calibre is an e-book manager. Prior to 9.2.0, a Server-Side Template Injection (SSTI) vulnerability in Calibre's Templite templating engine allows arbitrary code execution when a user converts an ebook using a malicious custom template file via the --template-html or --template-html-index command-line options. This vulnerability is fixed in 9.2.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | calibre | sid | 9.17.0+ds+~1.1.2-1 | fixed |
| Debian | calibre | forky | 9.17.0+ds+~1.1.2-1 | fixed |
| Debian | calibre | trixie | 8.5.0+ds-1+deb13u3 | fixed |
| Debian | calibre | bookworm | 6.13.0+repack-2+deb12u9 | fixed |
| Debian | calibre | bookworm-security | 6.13.0+repack-2+deb12u10 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | calibre | source | sid | 9.2.0+ds+~0.10.5-1 | not yet assigned | Not reported | Not reported |
| Debian | calibre | source | forky | 9.2.0+ds+~0.10.5-1 | not yet assigned | Not reported | Not reported |
| Debian | calibre | source | trixie | 8.5.0+ds-1+deb13u2 | not yet assigned | Not reported | Not reported |
| Debian | calibre | source | bookworm | 6.13.0+repack-2+deb12u6 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [calibre]Affected
Details (4)
6.13.0+repack-2+deb12u9· all · bookwormAffected · Fixed:
6.13.0+repack-2+deb12u6dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
6.13.0+repack-2+deb12u9· all · bookwormAffected · Fixed:
6.13.0+repack-2+deb12u6dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
6.13.0+repack-2+deb12u10· all · bookworm-securityAffected · Fixed:
6.13.0+repack-2+deb12u6dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
6.13.0+repack-2+deb12u10· all · bookworm-securityAffected · Fixed:
6.13.0+repack-2+deb12u6dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
- [calibre-bin]Affected
Source package: [calibre]
Details (4)
6.13.0+repack-2+deb12u9· amd64 · bookwormAffected · Fixed:
6.13.0+repack-2+deb12u6dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
6.13.0+repack-2+deb12u9· arm64 · bookwormAffected · Fixed:
6.13.0+repack-2+deb12u6dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
6.13.0+repack-2+deb12u10· amd64 · bookworm-securityAffected · Fixed:
6.13.0+repack-2+deb12u6dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
6.13.0+repack-2+deb12u10· arm64 · bookworm-securityAffected · Fixed:
6.13.0+repack-2+deb12u6dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
[Debian 13 (Trixie)]
- [calibre]Fixed
Details (4)
8.5.0+ds-1+deb13u3· all · trixieFixed · Fixed:
8.5.0+ds-1+deb13u2dsa · calibre · debian · 13
8.5.0+ds-1+deb13u3· all · trixieFixed · Fixed:
8.5.0+ds-1+deb13u2dsa · calibre · debian · 13
8.16.2+ds+~0.10.5-3~bpo13+1· all · trixie-backportsFixed · Fixed:
8.5.0+ds-1+deb13u2dsa · calibre · debian · 13
8.16.2+ds+~0.10.5-3~bpo13+1· all · trixie-backportsFixed · Fixed:
8.5.0+ds-1+deb13u2dsa · calibre · debian · 13
- [calibre-bin]Fixed
Source package: [calibre]
Details (4)
8.5.0+ds-1+deb13u3· amd64 · trixieFixed · Fixed:
8.5.0+ds-1+deb13u2dsa · calibre · debian · 13
8.5.0+ds-1+deb13u3· arm64 · trixieFixed · Fixed:
8.5.0+ds-1+deb13u2dsa · calibre · debian · 13
8.16.2+ds+~0.10.5-3~bpo13+1· amd64 · trixie-backportsFixed · Fixed:
8.5.0+ds-1+deb13u2dsa · calibre · debian · 13
8.16.2+ds+~0.10.5-3~bpo13+1· arm64 · trixie-backportsFixed · Fixed:
8.5.0+ds-1+deb13u2dsa · calibre · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10587-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-25731]
- [https://security-tracker.debian.org/tracker/CVE-2026-25731]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25731.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]