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CVE-2025-71437

Astral uv before 0.8.22 contains a path traversal vulnerability in source distribution (sdist) tar…

Risk score
43/100
CVSS
6.5 v3.1
Exploit chance (30 days)
0.3%
Published
21 Oct 2026

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What to know

What it is
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 f…
Affected
See advisory
Fix
Upgrade the product to 0.8.22 or later.
Exploitation
No known exploitation

Why it is Yellow

  • CVSS 6.5 medium

References

Original description

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.

Last activity 21 Oct 2026. Patch Forecast updates every hour.