{"schema":"threatline.record/2","record":{"id":"CVE-2026-104843","aliases":["GHSA-2cv4-cqwr-gwf7","PYSEC-2026-4305"],"summary":"uv: Path traversal on Windows through wheel extraction","details":"### Impact\n\nIn versions of uv from 0.12.7 to 0.12.18 on Windows, uv could be induced into writing a file outside of the installation prefix during wheel installation.\n\nA malicious wheel could use this to place an executable outside of the intended environment, including in a directory already present on the user's PATH. \n\nThis vulnerability only affects Windows hosts; no other platforms are affected.\n\n### Patches\n\nuv 0.12.18 and newer address this vulnerability. Users are encouraged to upgrade to 0.12.18.\n\n### Workarounds\n\nThere is no workaround other than upgrading to uv 0.12.18.","categories":["Libraries & packages"],"product":"uv","vendor":"astral-sh","ecosystem":"pip","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-2cv4-cqwr-gwf7","source_modified_at":"2026-10-05T23:42:10Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"pip","name":"uv"},"range":">= 0.12.7, < 0.12.18"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-2cv4-cqwr-gwf7","source_modified_at":"2026-10-05T23:42:10Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"rust","name":"uv"},"range":">= 0.12.7, < 0.12.18"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104843","source_modified_at":"2026-10-02T16:00:53.033Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"uv","vendor":"astral-sh","versions":[{"version":">= 0.12.7, < 0.12.18","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-2cv4-cqwr-gwf7","source_modified_at":"2026-10-15T14:55:34.900224098Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"PyPI","name":"uv","purl":"pkg:pypi/uv"},"ranges":[{"events":[{"introduced":"0.12.7"},{"fixed":"0.12.18"}],"type":"ECOSYSTEM"}],"versions":["0.12.10","0.12.11","0.12.12","0.12.13","0.12.14","0.12.15","0.12.16","0.12.17","0.12.7","0.12.8","0.12.9"]},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-2cv4-cqwr-gwf7","source_modified_at":"2026-10-15T14:55:34.900224098Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"crates.io","name":"uv","purl":"pkg:cargo/uv"},"ranges":[{"events":[{"introduced":"0.12.7"},{"fixed":"0.12.18"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-2cv4-cqwr-gwf7","source_modified_at":"2026-10-05T23:42:10Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"pip","name":"uv"},"version":"0.12.18"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-2cv4-cqwr-gwf7","source_modified_at":"2026-10-15T14:55:34.900224098Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"PyPI","name":"uv","purl":"pkg:pypi/uv"},"version":"0.12.18"}],"cvss":5.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00426,"percentile":0.35792,"score_date":"2026-10-23"},"published_at":"2026-10-02T15:29:15.517Z","modified_at":"2026-10-15T14:55:34.900224098Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-2cv4-cqwr-gwf7","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-05T23:42:10Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-104843","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-02T16:00:53.033Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-2cv4-cqwr-gwf7","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-15T14:55:34.900224098Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-104843","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/astral-sh/uv/security/advisories/GHSA-2cv4-cqwr-gwf7","tags":["x_refsource_CONFIRM"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104843","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/astral-sh/uv/pull/21923","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/astral-sh/uv/commit/67169645278ce082638d619beefa6d062540843b","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/astral-sh/uv/releases/tag/0.12.18","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-2cv4-cqwr-gwf7","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-02T15:57:14.347637Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-15T14:55:34.900224098Z","content_hash":"9e64a2e000f47c783b1b0de238b679fc684ae162d6cc894c15dcdad0a7f17060"}}