CVE-2026-64849

Summary

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 Software

Weaknesses

• CWE-918: CWE-918: Server-Side Request Forgery (SSRF)

References

• https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j
• https://github.com/mlflow/mlflow/issues/24179
• https://github.com/mlflow/mlflow/pull/24258
• https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939
• https://github.com/mlflow/mlflow/releases/tag/v3.15.0

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