Auth bypass in Lfprojects Mlflow
CVE-2026-13484
A vulnerability has been found in MLflow up to 4666cffc7912ea606d592fc38d6a75e2935f65e7. The impacted element is an unknown function of the component Experiment-scoped Label Schema CRUD API. Such manipulation leads to missing authorization. It is possible to launch the attack remotely. A high complexity level is associated with this attack. The exploitability is regarded as difficult. The exploit has been disclosed to the public and may be used. A reply to the GitHub issue explains, that "[t]he labeling schema PR has not been merged yet. The auth handlers will be added before the release."
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (40.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Lfprojects Mlflow
- Mlflow — versions 4666cffc7912ea606d592fc38d6a75e2935f65e7
Weakness classification (CWE)
References
- vuldb.com/vuln/374481 (VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/374481/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/cve/CVE-2026-13484 (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/submit/837658 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/mlflow/mlflow/issues/23608 (issue-tracking, Exploit, Third Party Advisory, exploit, Issue Tracking)
- github.com/mlflow/mlflow/issues/23608 (issue-tracking, Exploit, VDB Entry, Third Party Advisory, Issue Tracking)
- github.com/mlflow/mlflow/ (Product, product)
Frequently asked questions
- What is CVE-2026-13484?
- CVE-2026-13484 is a medium-severity vulnerability in Lfprojects Mlflow, classified under Missing Authorization. CVSS score: 5.0/10. Published 2026-06-28.
- How severe is CVE-2026-13484?
- Medium severity. CVSS v3 base score is 5.0 out of 10.