Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lfprojects | Mlflow | < 3.14.0 |
Related Weaknesses (CWE)
References
- https://github.com/mlflow/mlflow/commit/f9b1eb510478570609ef451984a255775aa4b937Patch
- https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5ExploitThird Party Advisory
- https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5ExploitThird Party Advisory
FAQ
What is CVE-2026-8147?
CVE-2026-8147 is a vulnerability with a CVSS score of 8.1 (HIGH). 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-leve...
How severe is CVE-2026-8147?
CVE-2026-8147 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-8147?
Check the references section above for vendor advisories and patch information. Affected products include: Lfprojects Mlflow.