SB2026040996 - Path traversal in uv

Description

This security bulletin contains information about 1 vulnerability.

1) Path traversal (CVE-ID: N/A)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to write files outside the intended installation prefix.

The vulnerability exists due to path traversal in tar extraction when processing a specially crafted source distribution with a sequence of symlinks. A remote attacker can provide a specially crafted source distribution to write files outside the intended installation prefix.

Only source distribution installations are affected; wheel installations are not affected.

Remediation

Install update from vendor's website.

References

• https://github.com/astral-sh/uv/security/advisories/GHSA-7j9j-68r2-f35q
• https://github.com/advisories/GHSA-7j9j-68r2-f35q