CVE-2026-25731

7.8 highEPSS 0.3%

High (7.8) in calibre-ebook calibre. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.8 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
CWE: CWE-1336
Published: 2026-02-06
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

calibre-ebook:calibre

References

https://github.com/kovidgoyal/calibre/commit/f0649b27512e987b95fcab2e1e0a3bcdafc23379
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-xrh9-w7qx-3gcc

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