Bug 2437917 (CVE-2026-25731) - CVE-2026-25731 calibre: Calibre: Arbitrary Code Execution via malicious custom template file during ebook conversion
Summary: CVE-2026-25731 calibre: Calibre: Arbitrary Code Execution via malicious custo...
Keywords:
Status: NEW
Alias: CVE-2026-25731
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2437953 2437954
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-09 11:13 UTC by OSIDB Bzimport
Modified: 2026-02-09 12:47 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-02-09 11:13:48 UTC 
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.
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