{"id":"CVE-2026-109153","state":"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.","publishedAt":"2026-10-13T10:00:20.259Z","updatedAt":"2026-10-16T17:17:33.320Z","severity":{"score":5.3,"label":"Medium","version":"4.0","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","source":"VulDB"},"assigner":"VulDB","products":["MosaicML Composer"],"affected":[{"vendor":"MosaicML","product":"Composer","versions":[{"version":"0.32.0","status":"affected"},{"version":"0.32.1","status":"affected"}],"cpes":["cpe:2.3:a:mosaicml:composer:*:*:*:*:*:*:*:*"],"modules":["Checkpoint Extraction"]}],"references":["https://vuldb.com/vuln/416887","https://vuldb.com/vuln/416887/cti","https://vuldb.com/cve/CVE-2026-109153","https://vuldb.com/submit/978647","https://github.com/mosaicml/composer/issues/3942","https://github.com/mosaicml/composer/"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/109xxx/CVE-2026-109153.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-109153","state":"PUBLISHED","datePublished":"2026-10-13T10:00:20.259Z","dateUpdated":"2026-10-16T17:17:33.320Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-10-12T11:41:35.535Z"},"containers":{"cna":{"title":"MosaicML Composer Checkpoint Extraction checkpoint.py tarball.extractall path traversal","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"MosaicML","product":"Composer","versions":[{"version":"0.32.0","status":"affected"},{"version":"0.32.1","status":"affected"}],"cpes":["cpe:2.3:a:mosaicml:composer:*:*:*:*:*:*:*:*"],"modules":["Checkpoint Extraction"]}],"references":[{"url":"https://vuldb.com/vuln/416887","name":"VDB-416887 | MosaicML Composer Checkpoint Extraction checkpoint.py tarball.extractall path traversal","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/416887/cti","name":"VDB-416887 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-109153","name":"CVE-2026-109153 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/978647","name":"Submit #978647 | mosaicml composer 0.32.1 Path Traversal","tags":["third-party-advisory"]},{"url":"https://github.com/mosaicml/composer/issues/3942","tags":["issue-tracking"]},{"url":"https://github.com/mosaicml/composer/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":6.3,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":6.3,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":7.5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","type":"CWE","lang":"en","description":"Path Traversal"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-10-13T10:00:20.259Z"},"timeline":[{"time":"2026-10-12T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-10-12T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-10-12T13:49:57.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Mohammedix88 (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}],"x_generator":["VulDB PVTS v202610"]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-16T16:46:46.784553Z","id":"CVE-2026-109153","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-16T17:17:33.320Z"}}]}}}