{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21851","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-01-05T16:44:16.366Z","datePublished":"2026-01-07T22:27:19.410Z","dateUpdated":"2026-01-08T20:09:55.184Z"},"containers":{"cna":{"title":"MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download","problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-9rg3-9pvr-6p27","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-9rg3-9pvr-6p27"},{"name":"https://github.com/Project-MONAI/MONAI/commit/4014c8475626f20f158921ae0cf98ed259ae4d59","tags":["x_refsource_MISC"],"url":"https://github.com/Project-MONAI/MONAI/commit/4014c8475626f20f158921ae0cf98ed259ae4d59"}],"affected":[{"vendor":"Project-MONAI","product":"MONAI","versions":[{"version":"<= 1.5.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-01-07T22:27:19.410Z"},"descriptions":[{"lang":"en","value":"MONAI (Medical Open Network for AI) is an AI toolkit for health care imaging. In versions up to and including 1.5.1, a Path Traversal (Zip Slip) vulnerability exists in MONAI's `_download_from_ngc_private()` function. The function uses `zipfile.ZipFile.extractall()` without path validation, while other similar download functions in the same codebase properly use the existing `safe_extract_member()` function. Commit 4014c8475626f20f158921ae0cf98ed259ae4d59 fixes this issue."}],"source":{"advisory":"GHSA-9rg3-9pvr-6p27","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-9rg3-9pvr-6p27","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-08T20:09:52.023174Z","id":"CVE-2026-21851","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-08T20:09:55.184Z"}}]}}