Arbitrary Code Injection The advisory has been revoked - it doesn't affect any version of package calibre (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN11-CALIBRE-17896385
- published9 Jul 2026
- disclosed7 Jul 2026
Introduced: 7 Jul 2026
CVE-2026-53511 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:11.
NVD Description
Note: Versions mentioned in the description apply only to the upstream calibre package and not the calibre package as distributed by Debian.
calibre is an e-book manager. Prior to 9.10.0, a malicious EPUB, OPF, or PDF file can execute arbitrary Python code when its metadata is read by calibre, including through Add books or Edit books, by embedding a custom column definition with a python: template in calibre:user_metadata that is passed unsanitized to exec() in the template formatter. This issue is fixed in version 9.10.0.
References
- https://security-tracker.debian.org/tracker/CVE-2026-53511
- https://github.com/kovidgoyal/calibre/commit/712f4e1ff5c1e798c335bef3bacc4efdee052e9c
- https://github.com/kovidgoyal/calibre/releases/tag/v9.10.0
- https://lists.debian.org/debian-lts-announce/2026/08/msg00034.html
- https://github.com/kovidgoyal/calibre/security/advisories/GHSA-2j4m-2q7x-2c47