{"id":"CVE-2026-53995","revision":"88edbb070759476d8a18d3b8437e459b","records":[{"revision":"88edbb070759476d8a18d3b8437e459b","observedAt":"2026-10-27T12:09:21.929+00:00","statement":{"source":"cve-program","id":"CVE-2026-53995","aliases":[],"title":"MLflow 3.17.1 and prior Path Traversal via Trace ID API","description":"MLflow 3.17.1 and earlier contains a path traversal vulnerability in the FileStore tracking backend that allows unauthenticated attackers to control filesystem paths by submitting a crafted trace ID containing traversal sequences to the POST /api/3.0/mlflow/traces endpoint. Attackers can exploit FileStore.start_trace() to write trace_info.yaml, request_metadata, and tag files with attacker-controlled metadata outside the intended experiment trace directory, subject to the server process's filesystem permissions. FileStore is the default tracking backend before MLflow 3.7.0 and opt-in thereafter (the default changed to a SQLite database), so deployments in the earlier part of the affected range are vulnerable without special configuration while later ones are affected only when FileStore is explicitly selected.","state":0,"publishedAt":"2026-10-19T21:05:16.53+00:00","modifiedAt":"2026-10-27T10:14:10.19+00:00","affected":[{"ecosystem":"Vendor product","name":"mlflow","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unknown\",\n                    \"vendor\": \"mlflow\",\n                    \"product\": \"mlflow\",\n                    \"packageURL\": \"pkg:github/mlflow/mlflow\",\n                    \"repo\": \"https://github.com/mlflow/mlflow\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\",\n                            \"lessThanOrEqual\": \"3.17.1\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","score":8.8,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","score":8.2,"severity":"HIGH"}],"references":["https://github.com/SaiTeja-Erukude/CVE-2026-53995-mlflow-path-traversal","https://github.com/mlflow/mlflow/pull/26842","https://www.vulncheck.com/advisories/mlflow-path-traversal-via-trace-id-api"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53995","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53995","identifiers":["CVE-2026-53995"]},"retained":false,"historicalAffected":[]}],"coverage":[]}