CVE-2026-64849

Summary

MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. Starting in 3.3.0 and 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.

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Affected products we track (1)

Recommendation

This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.

Official patch: https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939 ↗

Additional information

• NVD record
• https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939Patch
• https://github.com/mlflow/mlflow/pull/24258Patch
• https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969jAdvisory
• https://github.com/mlflow/mlflow/issues/24179Exploit
• https://github.com/mlflow/mlflow/releases/tag/v3.15.0
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849