CVE-2025-4435

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Python Software FoundationCPython0 < 3.10.18affected
Python Software FoundationCPython3.11.0 < 3.11.13affected
Python Software FoundationCPython3.12.0 < 3.12.11affected
Python Software FoundationCPython3.13.0 < 3.13.4affected
Python Software FoundationCPython3.14.0a1 < 3.14.0b3affected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References