{"cve":"CVE-2026-8147","nvd":{"published":"2026-07-02T09:16:19.100","modified":"2026-10-25T21:10:00.770","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1},"cwes":["CWE-284"],"references":["https://github.com/mlflow/mlflow/commit/f9b1eb510478570609ef451984a255775aa4b937","https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5","https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5"],"products":["lfprojects:mlflow"],"source":"nvd","synced_at":"2026-10-25T23:44:34.550481224+00:00"},"epss":{"cve":"CVE-2026-8147","score":0.00548,"percentile":0.45598,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-2cm6-r77w-6g96","url":"https://osv.dev/vulnerability/GHSA-2cm6-r77w-6g96","summary":"MLflow: trace API endpoints lack proper authorization validators","modified":"2026-08-19T12:55:38.896729948Z","packages":[{"ecosystem":"PyPI","name":"mlflow","purl":"pkg:pypi/mlflow","ranges":[">=2.14.0rc0 <3.13.0rc0"],"fixed":["3.13.0rc0"]}]},{"id":"PYSEC-2026-3686","url":"https://osv.dev/vulnerability/PYSEC-2026-3686","summary":"MLflow: trace API endpoints lack proper authorization validators","modified":"2026-08-19T12:55:38.896729948Z","packages":[{"ecosystem":"PyPI","name":"mlflow","purl":"pkg:pypi/mlflow","ranges":[">=2.14.0rc0 <3.13.0rc0"],"fixed":["3.13.0rc0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}