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CVE-2025-71437 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/astral-sh/uv/security/advisories/GHSA-7j9j-68r2-f35q	[email protected]
https://www.vulncheck.com/advisories/astral-uv-through-0.8.21-path-traversal-via-symlinks-in-sdist-tar-extraction	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-22	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

Date	Action	Recorded By
Oct 28, 2026	CVE Translated	[email protected]
Oct 21, 2026	CVE Modified	CISA-ADP
Oct 21, 2026	New CVE Received	[email protected]