Bug 2514427 (CVE-2026-73248) - CVE-2026-73248 calibre: calibre: Remote Code Execution via Python template restrictions bypass
Summary: CVE-2026-73248 calibre: calibre: Remote Code Execution via Python template re...
Keywords:
Status: NEW
Alias: CVE-2026-73248
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2514485
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-11 22:11 UTC by OSIDB Bzimport
Modified: 2026-08-12 05:44 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-08-11 22:11:40 UTC 
calibre is an e-book manager. Prior to 9.12.0, calibre processes attacker-controlled composite_template metadata from a malicious EPUB, OPF, PDF, or similar file through program: and a nested template() call whose formatter does not inherit allow_python_templates=False, allowing a nested python: template to reach compile_python_template and execute arbitrary Python code when the file is opened or imported. This issue is fixed in version 9.12.0.
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