Improper Neutralization of Special Elements Used in a Template Engine Affecting calibre package, versions <8.5.0+ds-1+deb13u2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN13-CALIBRE-15247975
- published7 Feb 2026
- disclosed6 Feb 2026
Introduced: 6 Feb 2026
CVE-2026-25731 (opens in a new tab)How to fix?
Upgrade Debian:13 calibre to version 8.5.0+ds-1+deb13u2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream calibre package and not the calibre package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
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.