CVE-2026-21020-Protobuf-Message-Parsing-Polymorphic-Deserialization-Vulnerability

CVE-2026-21020 – Protobuf Message Parsing Polymorphic Deserialization Vulnerability Program Code Python with protobuf protovuln.py - Insecure handling of Any type import addressbookpb2 Example protobuf Simulated deserialization that trusts an injected typeurl from google.protobuf import anypb2...