high8.5
CVE-2026-73248
calibre is an e-book manager.
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| Calibre Is An E-Book Manager. | before 9.12.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.