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CVE-2026-2297

SourcelessFileLoader does not use io.open_code()

Published: Mar 4, 2026Updated: May 1, 2026 Sources: CVE List NVD BDUCWE-668
5.5MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 89.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LC:NI:HA:N
Exploitability
AV:LAccess Vector
Local
AC:LAccess Complexity
Low
Impact
C:NConfidentiality
None
I:HIntegrity
H
A:NAvailability
None
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Weaknesses

CWE-668

Affected Products

Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
Python Software Foundation
oss-project·USaka psf
CPython
OSS Libraries

Exploitability

Official Patch Available
Scannable·OpenVAS
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References

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
github.com
and 11 more references View all →
News mentions
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