CVE-2026-25731

Published: Feb 6, 2026

Modified: Feb 6, 2026

PUBLISHED

CVSS v3.1

7.8

HIGH

Description

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.

Vendor	Product	Versions
kovidgoyal	calibre	affected `< 9.2.0`

Weaknesses (CWE)

CWE-1336

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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

x_refsource_CONFIRM

https://github.com/kovidgoyal/calibre/commit/f0649b27512e987b95fcab2e1e0a3bcdafc23379

x_refsource_MISC

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CVE-2026-25731

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References