# CVE-2026-2297

## Summary

- **CVE ID:** CVE-2026-2297
- **Severity:** MEDIUM
- **CVSS Score:** 5.7 (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)
- **CWE:** N/A
- **Published:** Mar 4, 2026
- **Last Modified:** Sep 14, 2026

## 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

- Python Software Foundation — CPython (0)
- Python Software Foundation — CPython (3.15.0a1)
- Python Software Foundation — CPython (3.14.0)
- Python Software Foundation — CPython (3.11.0)
- Python Software Foundation — CPython (3.12.0)
- Python Software Foundation — CPython (3.13.0)

## References

- [CNA](https://github.com/python/cpython/issues/145506)
- [CNA](https://github.com/python/cpython/pull/145507)
- [CNA](https://github.com/python/cpython/commit/482d6f8bdba9da3725d272e8bb4a2d25fb6a603e)
- [CNA](https://github.com/python/cpython/commit/a51b1b512de1d56b3714b65628a2eae2b07e535e)
- [CNA](https://github.com/python/cpython/commit/e58e9802b9bec5cdbf48fc9bf1da5f4fda482e86)
- [CVE](http://www.openwall.com/lists/oss-security/2026/03/05/6)
- [CNA](https://github.com/python/cpython/commit/69ddd9bb2cc4bd69b1565647c18659c6a789ccd9)
- [CNA](https://github.com/python/cpython/commit/876858c9f65d9ab656c7fa639f268ce7856d89dd)
- [CNA](https://github.com/python/cpython/commit/c70adad78caeeea33f92f560ecb93331ca11bf66)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 11.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._