CVE - CVE-2025-4138

CVE-ID
CVE-2025-4138	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata. You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected. Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://gist.github.com/sethmlarson/52398e33eff261329a0180ac1d54f42f URL:https://gist.github.com/sethmlarson/52398e33eff261329a0180ac1d54f42f MISC:https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951da URL:https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951da MISC:https://github.com/python/cpython/commit/28463dba112af719df1e8b0391c46787ad756dd9 URL:https://github.com/python/cpython/commit/28463dba112af719df1e8b0391c46787ad756dd9 MISC:https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a URL:https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a MISC:https://github.com/python/cpython/commit/4633f3f497b1ff70e4a35b6fe2c907cbe2d4cb2e URL:https://github.com/python/cpython/commit/4633f3f497b1ff70e4a35b6fe2c907cbe2d4cb2e MISC:https://github.com/python/cpython/commit/9c1110ef6652687d7c55f590f909720eddde965a URL:https://github.com/python/cpython/commit/9c1110ef6652687d7c55f590f909720eddde965a MISC:https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a URL:https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a MISC:https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b01 URL:https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b01 MISC:https://github.com/python/cpython/commit/dd8f187d0746da151e0025c51680979ac5b4cfb1 URL:https://github.com/python/cpython/commit/dd8f187d0746da151e0025c51680979ac5b4cfb1 MISC:https://github.com/python/cpython/issues/135034 URL:https://github.com/python/cpython/issues/135034 MISC:https://github.com/python/cpython/pull/135037 URL:https://github.com/python/cpython/pull/135037 MISC:https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/ URL:https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/
Assigning CNA
Python Software Foundation
Date Record Created
20250430	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250430)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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