What’s Vulnerable › Vulnerabilities

CVE-2024-4263: Improper Access Control in mlflow/mlflow

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-05-16 · updated 2026-06-17
• Weakness: CWE-284

Description

A broken access control vulnerability exists in mlflow/mlflow versions before 2.10.1, where low privilege users with only EDIT permissions on an experiment can delete any artifacts. This issue arises due to the lack of proper validation for DELETE requests by users with EDIT permissions, allowing them to perform unauthorized deletions of artifacts. The vulnerability specifically affects the handling of artifact deletions within the application, as demonstrated by the ability of a low privilege user to delete a directory inside an artifact using a DELETE request, despite the official documentation stating that users with EDIT permission can only read and update artifacts, not delete them.

Affected products

• mlflow/mlflow: before 2.12.1 — fixed in 2.12.1

How to fix

Upgrade to a fixed version: mlflow/mlflow 2.12.1. Check the vendor advisory for mitigations.

References

• https://github.com/mlflow/mlflow/commit/b43e0e3de5b500554e13dc032ba2083b2d6c94b8
• https://huntr.com/bounties/bfa116d3-2af8-4c4a-ac34-ccde7491ae11
• https://github.com/mlflow/mlflow/commit/b43e0e3de5b500554e13dc032ba2083b2d6c94b8
• https://huntr.com/bounties/bfa116d3-2af8-4c4a-ac34-ccde7491ae11

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