NuytsTech Security

CVE-2026-25731

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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.

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

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