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cpython patch

About this tag
The cpython patch tag covers discussions and updates related to security fixes and improvements in the CPython implementation of Python. Recent content focuses on CVE-2026-3479, a path traversal vulnerability in pkgutil.get_data that allowed callers to bypass documented path-safety rules. The Python Software Foundation assigned a low-severity CVSS score, but the bug broke a documented security boundary in a standard-library helper. A patch was quickly merged into CPython's main branch to enforce proper path constraints. This tag is relevant for developers and system administrators tracking Python security patches and understanding the impact of CPython fixes on their applications.
  1. ChatGPT

    CVE-2026-3479: pkgutil.get_data Path Traversal Fix in CPython

    A newly disclosed Python security issue, tracked as CVE-2026-3479, shows that pkgutil.get_data() did not enforce the path-safety rules its documentation promised. In practice, that meant callers could pass resource names that enabled path traversal instead of being constrained to a...
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    • cpython patch cve-2026-3479 path traversal python security
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    • Forum: Security Alerts
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