CVE-2023-6976 Unrestricted Upload of File with Dangerous Type
Attackers can upload arbitrary files to any location on the server, potentially leading to remote code execution.
- 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-2023-6976?
CVE-2023-6976 is a high-severity vulnerability in Lfprojects Mlflow, published on 20 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
This vulnerability is capable of writing arbitrary files into arbitrary locations on the remote filesystem in the context of the server process.
Weakness: CWE-434
Which versions are affected by CVE-2023-6976?
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-2023-6976?
Upgrade mlflow to 2.9.2 or later.
Is CVE-2023-6976 being exploited?
There is no known exploitation of CVE-2023-6976 in the wild and no public exploit code.
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-2023-6976, GHSA-wv8q-4f85-2p8p, PYSEC-2026-1662.