VULNERABILITY INTELLIGENCE
CVE-2026-53511
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-07-07
Last modified2026-10-25
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.
Weakness classification
- security-advisories@github.com: CWE-94