CVE-2025-71437 (GCVE-0-2025-71437)

Vulnerability from cvelistv5 – Published: 2026-10-21 00:36 – Updated: 2026-10-21 15:51
VLAI
Title
Astral uv through 0.8.21 Path Traversal via Symlinks in Sdist Tar Extraction
Summary
Astral uv before 0.8.22 contains a path traversal vulnerability in source distribution (sdist) tar extraction that allows a specially crafted sequence of symlinks to redirect file writes outside the intended extraction prefix. Attackers can publish a malicious sdist that, when installed by a victim, writes arbitrary files to filesystem locations outside the installation prefix.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-21 14:40 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7380 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
astral-sh uv Affected: 0 , ≤ 0.8.21 (semver)
guessed Create a notification for this product.
Date Public
2025-09-23 00:00
Credits
calebbrown charliermarsh woodruffw zanieb
Show details on NVD website
To clipboard 

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