CVE-2026-25731

Published February 6th, 2026

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CVSS v3

7.8

HIGH

CVSS v2

N/A

Affected

PROJECT

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.

kovidgoyal/calibre

The official source code repository for the calibre ebook manager

GitHub

25K