CVE-2026-3479

NONE

pkgutil.get_data() does not enforce documented restrictions

Title source: cna

Description

DISPUTED: The project has clarified that the documentation was incorrect, and that pkgutil.get_data() has the same security model as open(). The documentation has been updated to clarify this point. There is no vulnerability in the function if following the intended security model. pkgutil.get_data() did not validate the resource argument as documented, allowing path traversals.

References (7)

[Patch] https://github.com/python/cpython/pull/146122

[Vendor Advisory] https://mail.python.org/archives/list/[email protected]/thread/WYLLVQOOCKGK73JM7Z7ZSNOJC4N7BAWY/

[Issue Tracking] https://github.com/python/cpython/issues/146121

[Patch] https://github.com/python/cpython/commit/bcdf231946b1da8bdfbab4c05539bb0cc964a1c7

View Patch ZIP pw:eip

[Patch] https://github.com/python/cpython/commit/5af6ce3e7b643a30a02d22245c1e3f4a8bc0a1fe

[Patch] https://github.com/python/cpython/commit/cf59bf76470f3d75ad47d80ffb8ce76b64b5e943

[Patch] https://github.com/python/cpython/commit/d786d59a8f7196bb630100a869f28ad13436b59c

Scores

CVSS v4 0.0

EPSS 0.0001

EPSS Percentile 3.3%

CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-22

Status published

Products (4)

Python Software Foundation/CPython < 3.13.13

Python Software Foundation/CPython < 3.15.0

Python Software Foundation/CPython 3.14.0 - 3.14.4

Python Software Foundation/CPython 3.15.0a1 - 3.15.0a8

Published Mar 18, 2026

Tracked Since Mar 19, 2026