CVE-2026-69146 MLflow: LogInputs endpoint bypasses per-run UPDATE authorization in basic-auth
Authenticated users can inject dataset inputs into other users' runs due to missing authorization checks in the LogInputs endpoint.
- 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-2026-69146?
CVE-2026-69146 is a medium-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. From 3.13.0 until 3.15.0, LogInputs is absent from BEFORE_REQUEST_HANDLERS in the mlflow/server/auth package, allowing any authenticated user to call POST /api/2.0/mlflow/runs/log-inputs for another user's run_id and inject attacker-controlled DatasetInput records into the dataset_inputs lineage metadata without UPDATE permission. This issue is fixed in version 3.15.0.
Weakness: CWE-862
Which versions are affected by CVE-2026-69146?
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-2026-69146?
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-2026-69146 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-69146 exists.
Sources
Also known as BIT-mlflow-2026-69146, GHSA-3p64-6gvh-82v5, MINI-j6rc-4x44-q37w.