PT-2026-70939 · Calibre · Calibre
CVE-2026-73248
·
Published
2026-08-11
·
Updated
2026-08-11
CVSS v4.0
8.5
High
| Vector | AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
calibre versions prior to 9.12.0
Description
An issue exists where the software processes attacker-controlled
composite template metadata from malicious EPUB, OPF, PDF, or similar files. This occurs through the program: sequence and a nested template() call where the formatter fails to inherit allow python templates=False. This flaw allows a nested python: template to reach the compile python template function, leading to the execution of arbitrary Python code when the affected file is opened or imported.Recommendations
Update to version 9.12.0.
Exploit
Fix
RCE
Eval Injection
Code Injection
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Related Identifiers
Affected Products
Calibre