{"id":"CVE-2025-71437","revision":"6be3630aeab74ef4b45ad22d8ef0173f","records":[{"revision":"6be3630aeab74ef4b45ad22d8ef0173f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-71437","aliases":[],"title":"Astral uv through 0.8.21 Path Traversal via Symlinks in Sdist Tar Extraction","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.","state":0,"publishedAt":"2026-10-21T00:36:20.284+00:00","modifiedAt":"2026-10-21T15:51:10.699+00:00","affected":[{"ecosystem":"Vendor product","name":"uv","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"astral-sh\",\n                    \"product\": \"uv\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:pypi/uv\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThanOrEqual\": \"0.8.21\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/astral-sh/uv/security/advisories/GHSA-7j9j-68r2-f35q","https://www.vulncheck.com/advisories/astral-uv-through-0.8.21-path-traversal-via-symlinks-in-sdist-tar-extraction"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-71437","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-71437","identifiers":["CVE-2025-71437"]},"retained":false,"historicalAffected":[]}],"coverage":[]}