MLflow: SSRF on unauthenticated MLflow servers via third-party scorer kwargs in the scorer invoke, register, and GenAI evaluate endpoints

影響: pip:mlflow >= 3.12.0rc0, < 3.17.0 → 3.17.0

MLflow's tracking server exposes POST /ajax-api/3.0/mlflow/scorer/invoke with no authentication, and the handler reflectively instantiates an attacker-named class from attacker-supplied JSON with unconstrained constructor kwargs. With the optional trulens + trulens-providers-litellm packages installed, an unauthenticated attacker can force the server to make an outbound HTTP request to an arbitrary host of their choosing, carrying attacker-controlled headers (SSRF). Details Scorer.model_validat…

Read on GitHub Advisory Database

On 10/24/2026, 07:07 AM, GitHub Advisory Database published "MLflow: SSRF on unauthenticated MLflow servers via third-party scorer kwargs in the scorer invoke, register, and GenAI evaluate endpoints" (type: Advisory). Severity is "Medium" (medium). Related technologies: Python. CVE: CVE-2026-115886.