CVE-2023-6831 Path Traversal: '\..\filename' in mlflow/mlflow
Attackers can exploit path traversal in MLflow to read or modify arbitrary files on the server.
- 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-2023-6831?
CVE-2023-6831 is a high-severity path traversal vulnerability in Lfprojects Mlflow, published on 15 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Path Traversal: '\..\filename' in GitHub repository mlflow/mlflow prior to 2.9.2.
Which versions are affected by CVE-2023-6831?
4 open source packages ship an affected version, including mlflow. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mlflow Bitnami | All versions | 2.9.2 |
mlflow PyPI | All versions | 2.9.2 |
mlflow PyPI | All versions | 2.9.2 |
mlflow PyPI | All versions | 2.9.2 |
Products include Lfprojects Mlflow.
How do I fix CVE-2023-6831?
Upgrade mlflow to 2.9.2 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2023-6831 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6831 exists.
Public exploit code: 1 Nuclei template.
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-2023-6831, GHSA-554w-xh4j-8w64, PYSEC-2023-253.