CVE-2026-0596 Command Injection in mlflow/mlflow
Attackers can execute arbitrary commands via unsanitized model URIs when serving models with MLServer enabled, potentially escalating privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-0596?
CVE-2026-0596 is a critical command injection vulnerability in Lfprojects Mlflow, published on 31 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A command injection vulnerability exists in mlflow/mlflow when serving a model with `enable_mlserver=True`. The `model_uri` is embedded directly into a shell command executed via `bash -c` without proper sanitization. If the `model_uri` contains shell metacharacters, such as `$()` or backticks, it allows for command substitution and execution of attacker-controlled commands. This vulnerability affects the latest version of mlflow/mlflow and can lead to privilege escalation if a higher-privileged service serves models from a directory writable by lower-privileged users.
Weakness: CWE-78
Which versions are affected by CVE-2026-0596?
4 open source packages ship an affected version, including mlflow. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mlflow Bitnami | All versions | 3.11.1 |
mlflow PyPI | All versions | 3.9.0 |
mlflow PyPI | All versions | 3.9.0 |
mlflow PyPI | All versions | 3.9.0 |
Products include Lfprojects Mlflow.
How do I fix CVE-2026-0596?
Upgrade mlflow to a fixed version for your release line: 3.11.1 or 3.9.0.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-0596 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0596 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Lfprojects Mlflow
- CVE-2026-64849 MLflow Server-Side Request Forgery
- CVE-2025-15379 Command Injection in mlflow/mlflow
- CVE-2024-0520 Remote Code Execution due to Full Controlled File Write in mlflow/mlflow
- CVE-2023-6977 Path Traversal: '\..\filename'
- CVE-2023-6709 Improper Neutralization of Special Elements Used in a Template Engine in mlflow/mlflow
Sources
Also known as BIT-mlflow-2026-0596, GHSA-rvhj-8chj-8v3c, MINI-p4jm-5v9f-3whq, PYSEC-2026-424.