{"id":"CVE-2026-43637","aliases":["EUVD-2026-44669","GHSA-rrh3-cwwj-g5mg"],"status":"published","title":"Cornac \u003c 2.6.0 Path Traversal via _extract_archive() in download.py","description":"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 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.","severity":{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00662,"percentile":0.51992,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-22"],"published":"2026-07-15T13:54:38Z","modified":"2026-11-09T22:00:07Z","exploits":[{"source":"pocgithub","id":"rahulreddykarne/CVE-2026-43637-cornac","title":"rahulreddykarne/CVE-2026-43637-cornac","date":"2026-08-03","url":"https://github.com/rahulreddykarne/CVE-2026-43637-cornac"}],"fixes":[{"ecosystem":"PyPI","package":"cornac","fixed_in":["2.6.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"cornac","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"cornac","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.0"}]}],"versions":["0.1.0","0.1.0.post1","0.1.0.post2","0.1.0.post3","0.1.0.post4","0.1.0.post5","0.2.0","0.2.1","0.3.0","0.3.1","0.3.2","0.3.3","0.3.4","0.3.5","1.0.0","1.1.0","1.1.1","1.1.2","1.10.0","1.11.0","1.12.0","1.13.0","1.13.1","1.13.2","1.13.3","1.13.4","1.13.5","1.14.0","1.14.1","1.14.2","1.15.0","1.15.1","1.15.2","1.15.3","1.15.4","1.16.0","1.17.0","1.18.0","1.2.0","1.2.1","1.2.2","1.3.0","1.3.1","1.4.0","1.4.1","1.5.0","1.5.1","1.5.2","1.6.0","1.6.1","1.7.0","1.7.1","1.8.0","1.9.0","2.0.0","2.1.0","2.2.0","2.2.1","2.2.2","2.3.0","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","2.4.0","2.5.0"]}],"products":[{"vendor":"preferredai","product":"cornac"}],"references":[{"url":"https://github.com/PreferredAI/cornac/releases/tag/v2.6.0","tags":["release-notes","advisory","web"]},{"url":"https://github.com/PreferredAI/cornac/pull/709","tags":["issue-tracking","patch","fix","web"]},{"url":"https://github.com/PreferredAI/cornac/commit/8a50be72c11569b6747c6b96d6e31a0a1962f1a8","tags":["patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/cornac-path-traversal-via-extract-archive-in-download-py","tags":["third-party-advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43637","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rrh3-cwwj-g5mg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43637.json","tags":["advisory"]},{"url":"https://github.com/PreferredAI/cornac","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-43637","title":"Cornac \u003c 2.6.0 Path Traversal via _extract_archive() in download.py","description":"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 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.","status":"published","published":"2026-07-15T13:54:38.892Z","modified":"2026-11-08T14:03:29.478Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-08T15:43:33.322657Z"}],"euvd":[{"id":"EUVD-2026-44669","description":"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 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.","status":"published","published":"2026-07-15T13:54:38Z","modified":"2026-11-08T14:03:29Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-08T15:13:08.77824Z"}],"ghsa":[{"id":"GHSA-rrh3-cwwj-g5mg","title":"Cornac: Path Traversal via _extract_archive() in download.py","description":"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 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.","status":"published","published":"2026-07-15T15:33:06Z","modified":"2026-11-09T21:46:37Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"}],"cwes":["CWE-22"],"updated_at":"2026-11-09T21:50:00.934325Z"}],"nvd":[{"id":"CVE-2026-43637","description":"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 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.","status":"published","published":"2026-07-15T14:18:10.793Z","modified":"2026-10-24T21:10:00.13Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:29.879716Z"}],"osv":[{"id":"CVE-2026-43637","title":"Cornac \u003c 2.6.0 Path Traversal via _extract_archive() in download.py","description":"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 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.","status":"published","published":"2026-07-15T13:54:38.892Z","modified":"2026-11-09T22:11:20.74448296Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-09T22:41:08.537457Z"},{"id":"GHSA-rrh3-cwwj-g5mg","title":"Cornac: Path Traversal via _extract_archive() in download.py","description":"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 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.","status":"published","published":"2026-07-15T15:33:06Z","modified":"2026-11-09T22:00:07.747118929Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"},{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-09T22:10:51.322704Z"}]}}