{"id":"CVE-2026-43637","title":"Cornac < 2.6.0 Path Traversal via _extract_archive() in download.py","summary":"Cornac before 2.6.0 contains a path traversal (Tar Slip) vulnerability that allows attackers to write arbitrary files outside the intended cache directory by supplying a crafted TAR archive containing ../ sequences, absolute paths, or sy…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","cvssSource":"cna","cwe":["CWE-22"],"vendor":"PreferredAI","product":"cornac","affected":["cornac < 2.6.0"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-07-15T14:41:25.064320Z"},"exploitAvailable":true,"published":"2026-07-15","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:03:29.478Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43637","references":[{"url":"https://github.com/PreferredAI/cornac/releases/tag/v2.6.0","label":"cornac 2.6.0 Release Notes"},{"url":"https://github.com/PreferredAI/cornac/pull/709","label":"Pull Request"},{"url":"https://github.com/PreferredAI/cornac/commit/8a50be72c11569b6747c6b96d6e31a0a1962f1a8","label":"Patch Commit"},{"url":"https://www.vulncheck.com/advisories/cornac-path-traversal-via-extract-archive-in-download-py"}],"tags":["cve.org","exploit-available"],"epss":0.00662,"epssPercentile":0.51926,"exploits":{"github":1,"githubRepos":["https://github.com/rahulreddykarne/CVE-2026-43637-cornac"],"checkedAt":"2026-11-08T14:51:57.344Z"},"ingestedAt":"2026-11-08T14:51:22.428Z","slug":"CVE-2026-43637","body":"## Overview\n\nCornac before 2.6.0 contains a path traversal (Tar Slip) vulnerability that allows attackers to write arbitrary files outside the intended cache directory by supplying a crafted TAR archive containing ../ sequences, absolute paths, or symlink/hardlink entries to the _extract_archive() function in cornac/utils/download.py. Attackers can trigger this vulnerability through the built-in dataset loaders, which automatically download and extract archives, causing archive.extractall() to write files to arbitrary locations on the filesystem accessible to the running process.\n\n## Affected\n\n- `cornac < 2.6.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":62,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}