CVE-2026-19672

Vulnerability Description

The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. The containment check used the resolved path, but intermediate directories were created from the name as given. Only empty directories are created outside the destination. Member contents are still extracted inside it. To return to the destination the member's name must contain the destination directory's own final component, so extraction into a secure randomised directory is not affected. This affects POSIX platforms only. On Windows, .. components are collapsed before the path reaches the filesystem, so the directories outside the destination are never created.

Related Weaknesses (CWE)

CWE-22

References

FAQ

What is CVE-2026-19672?

CVE-2026-19672 is a documented vulnerability. The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. Th...

How severe is CVE-2026-19672?

CVSS scoring is not yet available for CVE-2026-19672. Check NVD for updates.

Is there a patch for CVE-2026-19672?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.