CVE-2026-2297
SourcelessFileLoader does not use io.open_code()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
4th
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.
| Vendor | python software foundation |
| Product | cpython |
| Published | Mar 4, 2026 |
| Last Updated | Apr 7, 2026 |
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Affected Versions
Python Software Foundation / CPython
0 < 3.13.13 3.14.0 < 3.14.4 3.15.0a1 < 3.15.0a7
References
github.com: https://github.com/python/cpython/issues/145506 github.com: https://github.com/python/cpython/pull/145507 github.com: https://github.com/python/cpython/commit/482d6f8bdba9da3725d272e8bb4a2d25fb6a603e github.com: https://github.com/python/cpython/commit/a51b1b512de1d56b3714b65628a2eae2b07e535e github.com: https://github.com/python/cpython/commit/e58e9802b9bec5cdbf48fc9bf1da5f4fda482e86 openwall.com: http://www.openwall.com/lists/oss-security/2026/03/05/6