CVE-2026-25731

A flaw was found in Calibre, an e-book manager. This Server-Side Template Injection SSTI vulnerability in Calibre's Templite templating engine allows an attacker to achieve arbitrary code execution. This occurs when a user converts an ebook using a specially crafted malicious custom template file...

PT-2026-6790

Name of the Vulnerable Software and Affected Versions calibre versions prior to 9.2.0 Description calibre is an e-book manager. A Server-Side Template Injection SSTI vulnerability exists in calibre’s Templite templating engine. This allows for arbitrary code execution when a user converts an eboo...

CVE-2026-25731: Improper Neutralization of Special Elements Used in a Template Engine

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...