CVE-2023-6977 Path Traversal: '\..\filename'
Attackers can read sensitive server files via path traversal in MLflow, requiring an upgrade to mitigate data exposure risks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-6977?
CVE-2023-6977 is a critical path traversal vulnerability in Lfprojects Mlflow, published on 20 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This vulnerability enables malicious users to read sensitive files on the server.
Weakness: CWE-29
Which versions are affected by CVE-2023-6977?
4 open source packages ship an affected version, including mlflow. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mlflow Bitnami | From 1.0.0 | 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-2023-6977?
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-2023-6977 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6977 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-2023-6709 Improper Neutralization of Special Elements Used in a Template Engine in mlflow/mlflow
- CVE-2023-6015 MLflow Arbitrary File Upload
Sources
Also known as BIT-mlflow-2023-6977, GHSA-qg8p-32gr-gh6x, PYSEC-2026-1659.