CVE-2026-69148 MLflow: CreateModelVersion source validation does not check READ permission on referenced run_id
Authenticated users can bypass READ permission checks to access other users' model artifacts in MLflow.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-69148?
CVE-2026-69148 is a high-severity missing authorization vulnerability in mlflow, published on 17 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-69148?
3 open source packages ship an affected version, including mlflow.
| Package | Affected | Fixed in |
|---|---|---|
mlflow Bitnami | All versions | 3.15.0 |
mlflow npm | All versions | 3.15.0 |
mlflow npm | All versions | 3.15.0 |
How do I fix CVE-2026-69148?
Upgrade mlflow to 3.15.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-69148 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-69148 exists.
Sources
Also known as BIT-mlflow-2026-69148, GHSA-gqch-g4w5-7qcw, MINI-4cpq-jqj8-22pc.