Auth bypass in Lfprojects Mlflow
CVE-2026-2651
A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the `--serve-artifacts` mode is enabled. The authorization logic does not enforce resource-level permission checks for `/m…
Vulnerability class: Broken Access Control
EPSS: 0.001 (17.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Lfprojects Mlflow
- Mlflow Mlflow/mlflow — versions unspecified
Weakness classification (CWE)
References
- security@huntr.dev (Exploit, Third Party Advisory)
- security@huntr.dev (Patch)
Frequently asked questions
- What is CVE-2026-2651?
- CVE-2026-2651 is a critical-severity vulnerability in Lfprojects Mlflow, classified under Missing Authorization. CVSS score: 9.0/10. Published 2026-05-25.
- How severe is CVE-2026-2651?
- Critical severity. CVSS v3 base score is 9.0 out of 10.