CVE-2026-2297

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.

PUBLISHED Reserved 2026-02-10 | Published 2026-03-04 | Updated 2026-03-05 | Assigner PSF

Product status

References

www.openwall.com/lists/oss-security/2026/03/05/6

github.com/python/cpython/issues/145506 issue-tracking

github.com/python/cpython/pull/145507 patch

github.com/...ommit/482d6f8bdba9da3725d272e8bb4a2d25fb6a603e patch

github.com/...ommit/a51b1b512de1d56b3714b65628a2eae2b07e535e patch

github.com/...ommit/e58e9802b9bec5cdbf48fc9bf1da5f4fda482e86 patch

cve.org (CVE-2026-2297)

nvd.nist.gov (CVE-2026-2297)

Download JSON