Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Python Software Foundation CPython
Default version status: unaffected
0 to < 3.10.21affected3.11.0 to < 3.11.16affected3.12.0 to < 3.12.14affected3.13.0 to < 3.13.13affected3.14.0 to < 3.14.4affected3.15.0a1 to < 3.15.0a7affected
References
- https://github.com/python/cpython/issues/145506 ↗
- https://github.com/python/cpython/pull/145507 ↗
- https://github.com/python/cpython/commit/482d6f8bdba9da3725d272e8bb4a2d25fb6a603e ↗
- https://github.com/python/cpython/commit/a51b1b512de1d56b3714b65628a2eae2b07e535e ↗
- https://github.com/python/cpython/commit/e58e9802b9bec5cdbf48fc9bf1da5f4fda482e86 ↗
- https://github.com/python/cpython/commit/69ddd9bb2cc4bd69b1565647c18659c6a789ccd9 ↗
- https://github.com/python/cpython/commit/876858c9f65d9ab656c7fa639f268ce7856d89dd ↗
- https://github.com/python/cpython/commit/c70adad78caeeea33f92f560ecb93331ca11bf66 ↗
- http://www.openwall.com/lists/oss-security/2026/03/05/6 ↗