{"id":"CVE-2026-73030","summary":"unearth 0.18.2 Path Traversal via Unnormalized Paths and Symlink Escape","details":"unearth through 0.18.2, fixed in commit 6c78164, contains a path traversal vulnerability in the is_within_directory function that fails to normalize paths before validation, allowing ../ sequences to bypass directory containment checks. Attackers can supply malicious tar archives with symlink members or traversal sequences to write files to arbitrary filesystem locations accessible to the process.","modified":"2026-08-13T03:52:07.738560083Z","published":"2026-08-10T20:09:44.641Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-22"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73030.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73030.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73030"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/unearth-path-traversal-via-unnormalized-paths-and-symlink-escape"},{"type":"REPORT","url":"https://github.com/frostming/unearth/pull/181"},{"type":"FIX","url":"https://github.com/frostming/unearth/commit/6c78164e7bfa28b8b3d6f247b87e560692e3c8ba"},{"type":"PACKAGE","url":"https://github.com/frostming/unearth"},{"type":"EVIDENCE","url":"https://github.com/frostming/unearth/issues/180"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/frostming/unearth","events":[{"introduced":"0"},{"fixed":"e622e68fb008b365b8a8def1880282e74bab9a6c"},{"fixed":"6c78164e7bfa28b8b3d6f247b87e560692e3c8ba"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.18.2"}],"source":["DESCRIPTION","REFERENCES"]}}],"versions":["0.18.2","0.18.1","0.18.0","0.17.5","0.17.4","0.17.3","0.17.2","0.17.1","0.17.0","0.16.1","0.16.0","0.15.4","0.15.3","0.15.2","0.15.1","0.15.0","0.14.0","0.13.0","0.12.1","0.12.0","0.11.2","0.11.1","0.11.0","0.10.0","0.9.3","0.9.2","0.9.1","0.9.0","0.8.1","0.8.0","0.7.2","0.7.1","0.7.0","0.6.3","0.6.2","0.6.1","0.6.0","0.5.2","0.5.1","0.5.0","0.4.1","0.4.0","0.3.2","0.3.1","0.3.0","0.2.0","0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73030.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"}]}