Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951d
- https://github.com/python/cpython/commit/28463dba112af719df1e8b0391c46787ad756dd
- https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390
- https://github.com/python/cpython/commit/4633f3f497b1ff70e4a35b6fe2c907cbe2d4cb2
- https://github.com/python/cpython/commit/9c1110ef6652687d7c55f590f909720eddde965
- https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2
- https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b0
- https://github.com/python/cpython/commit/dd8f187d0746da151e0025c51680979ac5b4cfb
- https://github.com/python/cpython/issues/135034
- https://github.com/python/cpython/pull/135037
- https://mail.python.org/archives/list/[email protected]/thread/MAXIJJ
FAQ
What is CVE-2025-4435?
CVE-2025-4435 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.errorle...
How severe is CVE-2025-4435?
CVE-2025-4435 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-4435?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.