{"id":"BIT-mlflow-2026-8147","summary":"Authorization Bypass in mlflow/mlflow","details":"In MLflow versions prior to 3.14.0, when running with authentication enabled, the trace API endpoints lack proper authorization validators. This allows any authenticated user to bypass experiment-level authorization controls on all trace operations, including reading, deleting, and modifying traces on experiments they do not have permission to access. The issue arises from the `_before_request` handler, which does not register authorization validators for trace endpoints, resulting in requests proceeding without validation. This vulnerability can expose sensitive data, destroy audit logs, and allow unauthorized modifications.","aliases":["CVE-2026-8147","GHSA-2cm6-r77w-6g96","PYSEC-2026-3686"],"modified":"2026-09-08T08:48:13.520369146Z","published":"2026-07-06T23:44:39.868Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*"]},"references":[{"type":"FIX","url":"https://github.com/mlflow/mlflow/commit/f9b1eb510478570609ef451984a255775aa4b937"},{"type":"ADVISORY","url":"https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8147"}],"affected":[{"package":{"name":"mlflow","ecosystem":"Bitnami","purl":"pkg:bitnami/mlflow"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.14.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/mlflow/BIT-mlflow-2026-8147.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}],"schema_version":"1.9.0"}