Deserialization of Untrusted Data

Overview feast is a Python SDK for Feast Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the ApplyFeatureView handler of registryserver.py, which calls FeatureView.fromproto and deserializes the feature view's embedded user-defined function before the appl...

CVE-2026-56121 Feast < 0.63.0 Unauthenticated RCE via ApplyFeatureView gRPC Deserialization

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 userdefinedfunction.body field of an OnDemandFeatureView spec is decoded from...

CVE-2026-56121 Feast < 0.63.0 Unauthenticated RCE via ApplyFeatureView gRPC Deserialization

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 userdefinedfunction.body field of an OnDemandFeatureView spec is decoded from...

PT-2026-51837

Name of the Vulnerable Software and Affected Versions Feast versions prior to 0.63.0 Description An unsafe deserialization issue exists in the registry server that allows unauthenticated or unauthorized attackers to achieve remote code execution. By sending a crafted gRPC request, an attacker can...