Vulnerability Description
In mlflow/mlflow, the FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization when the `basic-auth` app is enabled. This vulnerability affects the latest version of the repository. If job execution is enabled (`MLFLOW_SERVER_ENABLE_JOB_EXECUTION=true`) and any job function is allowlisted, any network client can submit, read, search, and cancel jobs without credentials, bypassing basic-auth entirely. This can lead to unauthenticated remote code execution if allowed jobs perform privileged actions such as shell execution or filesystem changes. Even if jobs are deemed safe, this still constitutes an authentication bypass, potentially resulting in job spam, denial of service (DoS), or data exposure in job results.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lfprojects | Mlflow | - |
Related Weaknesses (CWE)
References
- https://huntr.com/bounties/b2e5b028-9541-4d29-8703-a76f1a3734d8Third Party AdvisoryExploit
FAQ
What is CVE-2026-0545?
CVE-2026-0545 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In mlflow/mlflow, the FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization when the `basic-auth` app is enabled. This vulnerability affects the lates...
How severe is CVE-2026-0545?
CVE-2026-0545 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-0545?
Check the references section above for vendor advisories and patch information. Affected products include: Lfprojects Mlflow.