cve-2026-3479

About this tag
CVE-2026-3479 is a low-severity security vulnerability in CPython's pkgutil.get_data() function. The issue allowed path traversal because the function did not enforce documented path-safety rules, enabling callers to pass resource names that could escape the intended package-relative directory. The Python Software Foundation assigned a low CVSS score, but the bug is notable for breaking a documented security boundary in a widely used standard-library helper. The fix was committed to CPython's main branch shortly after disclosure. This tag covers discussions and updates related to the vulnerability, its impact, and the patch.

  1. 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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