CVSS 4.0
5.7 mediumCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NCVE-2026-2297
Medium (5.7). EPSS 0.2% chance of exploitation in the next 30 days.
The import hook in CPython that handles legacy *.pyc files (SourcelessFileLoader) is incorrectly handled in FileLoader (a base class) and so does not use io.open_code() to read the .pyc files. sys.audit handlers for this audit event therefore do not fire.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-31)
- CWE
- CWE-668
- Published
- Modified
- Record from
- the NVD, synced
References
- https://github.com/python/cpython/commit/482d6f8bdba9da3725d272e8bb4a2d25fb6a603e
- https://github.com/python/cpython/commit/69ddd9bb2cc4bd69b1565647c18659c6a789ccd9
- https://github.com/python/cpython/commit/876858c9f65d9ab656c7fa639f268ce7856d89dd
- https://github.com/python/cpython/commit/a51b1b512de1d56b3714b65628a2eae2b07e535e
- https://github.com/python/cpython/commit/c70adad78caeeea33f92f560ecb93331ca11bf66