{"id":"CVE-2026-109153","aliases":["EUVD-2026-98450","GHSA-9h32-g52h-pxjh"],"status":"published","title":"MosaicML Composer Checkpoint Extraction checkpoint.py tarball.extractall path traversal","description":"A vulnerability was detected in MosaicML Composer up to 0.32.1. This affects the function tarball.extractall of the file composer/utils/checkpoint.py of the component Checkpoint Extraction. The manipulation results in path traversal. The attack can be executed remotely. The vendor was contacted early about this disclosure.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00493,"percentile":0.4278,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2026-10-13T10:00:20Z","modified":"2026-10-28T02:31:03Z","products":[{"vendor":"composer","product":"composer"},{"vendor":"mosaicml","product":"composer"}],"references":[{"url":"https://vuldb.com/vuln/416887","tags":["vdb-entry","technical-description","advisory"]},{"url":"https://vuldb.com/vuln/416887/cti","tags":["signature","permissions-required","report"]},{"url":"https://vuldb.com/cve/CVE-2026-109153","tags":["third-party-advisory","advisory"]},{"url":"https://vuldb.com/submit/978647","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/mosaicml/composer/issues/3942","tags":["issue-tracking","report"]},{"url":"https://github.com/mosaicml/composer/","tags":["product","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109153","tags":["advisory"]},{"url":"https://github.com/mosaicml/composer"},{"url":"https://github.com/advisories/GHSA-9h32-g52h-pxjh"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109153.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-109153","title":"MosaicML Composer Checkpoint Extraction checkpoint.py tarball.extractall path traversal","description":"A vulnerability was detected in MosaicML Composer up to 0.32.1. This affects the function tarball.extractall of the file composer/utils/checkpoint.py of the component Checkpoint Extraction. The manipulation results in path traversal. The attack can be executed remotely. The vendor was contacted early about this disclosure.","status":"published","published":"2026-10-13T10:00:20.259Z","modified":"2026-10-16T17:17:33.32Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium","assessor":"cna"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C","level":"medium","assessor":"cna"},{"version":"3.0","score":6.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C","level":"medium","assessor":"cna"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:C","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:20:11.24076Z"}],"euvd":[{"id":"EUVD-2026-98450","description":"A vulnerability was detected in MosaicML Composer up to 0.32.1. This affects the function tarball.extractall of the file composer/utils/checkpoint.py of the component Checkpoint Extraction. The manipulation results in path traversal. The attack can be executed remotely. The vendor was contacted early about this disclosure.","status":"published","published":"2026-10-13T10:00:20Z","modified":"2026-10-16T17:17:33Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium"}],"updated_at":"2026-11-02T17:00:04.331134Z"}],"ghsa":[{"id":"GHSA-9h32-g52h-pxjh","title":"A vulnerability was detected in MosaicML Composer up to 0.32.1. This affects the function tarball...","description":"A vulnerability was detected in MosaicML Composer up to 0.32.1. This affects the function tarball.extractall of the file composer/utils/checkpoint.py of the component Checkpoint Extraction. The manipulation results in path traversal. The attack can be executed remotely. The vendor was contacted early about this disclosure.","status":"published","published":"2026-10-13T12:32:58Z","modified":"2026-10-13T12:33:06Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/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":"medium"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:13:10.715475Z"}],"nvd":[{"id":"CVE-2026-109153","description":"A vulnerability was detected in MosaicML Composer up to 0.32.1. This affects the function tarball.extractall of the file composer/utils/checkpoint.py of the component Checkpoint Extraction. The manipulation results in path traversal. The attack can be executed remotely. The vendor was contacted early about this disclosure.","status":"published","published":"2026-10-13T11:17:14.323Z","modified":"2026-10-16T18:17:30.243Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/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":"medium","assessor":"secondary"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:56.72789Z"}],"osv":[{"id":"CVE-2026-109153","title":"MosaicML Composer Checkpoint Extraction checkpoint.py tarball.extractall path traversal","description":"A vulnerability was detected in MosaicML Composer up to 0.32.1. This affects the function tarball.extractall of the file composer/utils/checkpoint.py of the component Checkpoint Extraction. The manipulation results in path traversal. The attack can be executed remotely. The vendor was contacted early about this disclosure.","status":"published","published":"2026-10-13T10:00:20.259Z","modified":"2026-10-28T02:31:03.31114251Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:44:55.279797Z"}]}}