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CVE-2026-53511

Published Jul 7, 2026 CWE-94 EPSS 0.15% (5th pctl)

Overview

CVE-2026-53511 is a known-severity vulnerability. It was published on July 7, 2026.

Technical Description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/kovidgoyal/calibre/commit/712f4e1ff5c1e798c335bef3bacc4efdee052e9c GitHub github.com/kovidgoyal/calibre/releases/tag/v9.10.0 GitHub github.com/kovidgoyal/calibre/security/advisories/GHSA-2j4m-2q7x-2c47 Ref lists.debian.org/debian-lts-announce/2026/08/msg00034.html GitHub github.com/kovidgoyal/calibre/security/advisories/GHSA-2j4m-2q7x-2c47

Frequently Asked Questions

What is CVE-2026-53511?

CVE-2026-53511 is a known-severity vulnerability. It was published on July 7, 2026.

How severe is CVE-2026-53511?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-53511?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-53511?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-53511 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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HackBrowser

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