Auth bypass in Mlflow
CVE-2026-69148
MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. Prior to 3.15.0, CreateModelVersion accepts a run_id or model_id after _validate_source_run() or _validate_source_model() in mlflow/server/handlers.py verifies only path containment, allowing authenticated users to create a model version that references another user's artifact directory and read files through GET /model-versions/get-artifact without the required READ permission. This issue is fixed in version 3.15.0.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Mlflow — versions < 3.15.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-69148?
- CVE-2026-69148 is a high-severity vulnerability in Mlflow, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-08-17.
- How severe is CVE-2026-69148?
- High severity. CVSS v3 base score is 7.1 out of 10.