CVE-2026-2297

MEDIUM EPSS 10.2%
Published Mar 4, 20264mo ago · Modified Jun 17, 20262w ago
5.7 CVSS 4.0
Medium
Find Similar
Published Mar 4, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.7
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
10.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-668

References 8

  • openwall.com http://www.openwall.com/lists/oss-security/2026/03/05/6
  • github.com https://github.com/python/cpython/commit/482d6f8bdba9da3725d272e8bb4a2d25fb6a603e
  • github.com https://github.com/python/cpython/commit/69ddd9bb2cc4bd69b1565647c18659c6a789ccd9
  • github.com https://github.com/python/cpython/commit/876858c9f65d9ab656c7fa639f268ce7856d89dd
  • github.com https://github.com/python/cpython/commit/a51b1b512de1d56b3714b65628a2eae2b07e535e
  • github.com https://github.com/python/cpython/commit/e58e9802b9bec5cdbf48fc9bf1da5f4fda482e86
  • github.com https://github.com/python/cpython/issues/145506
  • github.com https://github.com/python/cpython/pull/145507

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.