CVE-2025-4435

Published: Jun 3, 2025Modified: Jun 17, 2026Deferred

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 3.9 / Impact: 3.6

Source: CNA (Secondary)

Description

When using a TarFile.errorlevel = 0 and extracting with a filter the documented behavior is that any filtered members would be skipped and not extracted. However the actual behavior of TarFile.errorlevel = 0 in affected versions is that the member would still be extracted and not skipped.

Related CWEs

Incorrect Calculation

The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.

References (11)

https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951da

Source: cna@python.org

https://github.com/python/cpython/commit/28463dba112af719df1e8b0391c46787ad756dd9

Source: cna@python.org

https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a

Source: cna@python.org

https://github.com/python/cpython/commit/4633f3f497b1ff70e4a35b6fe2c907cbe2d4cb2e

Source: cna@python.org

https://github.com/python/cpython/commit/9c1110ef6652687d7c55f590f909720eddde965a

Source: cna@python.org

https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a

Source: cna@python.org

https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b01

Source: cna@python.org

https://github.com/python/cpython/commit/dd8f187d0746da151e0025c51680979ac5b4cfb1

Source: cna@python.org

https://github.com/python/cpython/issues/135034

Source: cna@python.org

https://github.com/python/cpython/pull/135037

Source: cna@python.org

https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/

Source: cna@python.org

Timeline

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