CVE-2026-8147Authorization Bypass in mlflow/mlflow
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 8.1 HIGH (v3.0, CNA)CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-284
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- @huntr_ai
- NVD analysis
- Analyzed
- Record last updated
- Jul 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mlflow mlflow/mlflow mlflow:mlflow (from the name) | from unspecified before 3.14.0 | CNA record |
lfprojects mlflow lfprojects:mlflow | before 3.14.0 | NVD |
References
- https://huntr.com/bounties/b00c3ddd-373e-492f-9bf0-41a28bb21ed5exploit, third-party-advisory
- https://github.com/mlflow/mlflow/commit/f9b1eb510478570609ef451984a255775aa4b937patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.