{"schema":"threatline.record/2","record":{"id":"CVE-2025-71437","aliases":["GHSA-7j9j-68r2-f35q"],"summary":"Astral uv through 0.8.21 Path Traversal via Symlinks in Sdist Tar Extraction","details":"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.","categories":["Unclassified"],"product":"uv","vendor":"astral-sh","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-71437","source_modified_at":"2026-10-21T15:51:10.699Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"uv","vendor":"astral-sh","versions":[{"version":"0","status":"affected","versionType":"semver","lessThanOrEqual":"0.8.21"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00285,"percentile":0.19988,"score_date":"2026-10-23"},"published_at":"2026-10-21T00:36:20.284Z","modified_at":"2026-10-21T15:51:10.699Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2025-71437","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T15:51:10.699Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2025-71437","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/astral-sh/uv/security/advisories/GHSA-7j9j-68r2-f35q","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/astral-uv-through-0.8.21-path-traversal-via-symlinks-in-sdist-tar-extraction","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-21T14:40:32.302978Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-21T15:51:10.699Z","content_hash":"9e42d28aad86b34b603ab28e448370eab1cf1268104006eee2f63cc57c603b96"}}