CVE-2026-56121
No fix known EPSS 1%CVSS 9.8
Feast before 0.63.0 contains an unsafe deserialization vulnerability that allows unauthenticated or unauthorized attackers to achieve remote code execution by sending a crafted gRPC request to the registry server. The user_defined_function.body field of an OnDemandFeatureView spec is decoded from base64 and passed to dill.loads() before any authorization check is performed, enabling attackers to embed a malicious serialized Python object with an arbitrary __reduce__ method to execute OS commands as the feast service account.
Products: feast-dev feast, Red Hat OpenShift AI 3.4, Red Hat OpenShift AI (RHOAI)