{"id":"CVE-2025-71437","published":"2026-10-21T01:17:19.493","lastModified":"2026-10-22T17:39:56.760","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.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","cwes":["CWE-22"],"vendors":[],"products":[],"references":[{"url":"https://github.com/astral-sh/uv/security/advisories/GHSA-7j9j-68r2-f35q","tags":[]},{"url":"https://www.vulncheck.com/advisories/astral-uv-through-0.8.21-path-traversal-via-symlinks-in-sdist-tar-extraction","tags":[]}],"exploitRefs":[{"url":"https://github.com/astral-sh/uv/security/advisories/GHSA-7j9j-68r2-f35q","tags":[]}],"hasPoc":true,"ai":null}