CVE-2026-73248
published 2026-08-11CVE-2026-73248: 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…
PriorityP345high8.5CVSS 4.0
AVLACLATNPRNUIPVCHVIHVAHSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.15%
4.6th percentile
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
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| kovidgoyal | calibre | < 9.12.0 | 9.12.0 |
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Bugzilla
CVE-2026-73248 calibre: calibre: Remote Code Execution via Python template restrictions bypass [fedora-all]
bugzilla·2026-08-12·CVSS 8.5
CVE-2026-73248 [HIGH] CVE-2026-73248 calibre: calibre: Remote Code Execution via Python template restrictions bypass [fedora-all]
CVE-2026-73248 calibre: calibre: Remote Code Execution via Python template restrictions bypass [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-73248 calibre: calibre: Remote Code Execution via Python template restrictions bypass
bugzilla·2026-08-11·CVSS 8.5
CVE-2026-73248 [HIGH] CVE-2026-73248 calibre: calibre: Remote Code Execution via Python template restrictions bypass
CVE-2026-73248 calibre: calibre: Remote Code Execution via Python template restrictions bypass
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.
2026-08-11
Published