{"id":"CVE-2026-8147","state":"PUBLISHED","title":"Authorization Bypass in mlflow/mlflow","description":"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.","publishedAt":"2026-07-02T07:32:58.308Z","updatedAt":"2026-07-02T12:28:31.554Z","severity":{"score":8.1,"label":"High","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","source":"@huntr_ai"},"assigner":"@huntr_ai","products":["mlflow mlflow/mlflow"],"affected":[{"vendor":"mlflow","product":"mlflow/mlflow","versions":[{"version":"unspecified","status":"affected","lessThan":"3.14.0","versionType":"custom"}]}],"references":["https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5","https://github.com/mlflow/mlflow/commit/f9b1eb510478570609ef451984a255775aa4b937"],"weaknesses":["CWE-284"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/8xxx/CVE-2026-8147.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8147","state":"PUBLISHED","datePublished":"2026-07-02T07:32:58.308Z","dateUpdated":"2026-07-02T12:28:31.554Z","assignerShortName":"@huntr_ai","assignerOrgId":"c09c270a-b464-47c1-9133-acb35b22c19a","dateReserved":"2026-05-08T02:45:28.857Z"},"containers":{"cna":{"title":"Authorization Bypass in mlflow/mlflow","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"mlflow","product":"mlflow/mlflow","versions":[{"version":"unspecified","status":"affected","lessThan":"3.14.0","versionType":"custom"}]}],"references":[{"url":"https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5"},{"url":"https://github.com/mlflow/mlflow/commit/f9b1eb510478570609ef451984a255775aa4b937"}],"metrics":[{"cvssV3_0":{"version":"3.0","attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","baseScore":8.1,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","type":"CWE","lang":"en","description":"CWE-284 Improper Access Control"}]}],"providerMetadata":{"shortName":"@huntr_ai","orgId":"c09c270a-b464-47c1-9133-acb35b22c19a","dateUpdated":"2026-07-02T07:32:58.308Z"},"source":{"advisory":"b00c3ddd-373e-492f-9bf0-41a28bb21ed5","discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-02T12:28:27.236676Z","id":"CVE-2026-8147","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-02T12:28:31.554Z"}}]}}}