CVE-2026-64849

MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. Prior to 3.15.0, the unauthenticated POST /api/2.0/mlflow/webhooks/{id}/test endpoint calls _validate_webhook_url() in mlflow/utils/validation.py only for the original URL while mlflow/webhooks/delivery.py follows redirects and re-resolves the hostname without pinning the validated address, allowing attackers to reach internal or cloud metadata services and receive response_status and response_body. This issue is fixed in version 3.15.0.

Affected products

Mlflow

Lfprojects Mlflow

< 3.15.0

CVSS 3.1

9.3 CRITICAL

EPSS

8.2% (94th percentile)

Weakness

CWE-918

NVD status

Analyzed

Published

2026-08-17