GO-2026-5121 Envoy AI Proxy - MCP Message Smuggling Vulnerability in github.com/envoyproxy/ai-gateway

Envoy AI Proxy - MCP Message Smuggling Vulnerability in github.com/envoyproxy/ai-gateway...

GHSA-4GPH-2HHR-5MWG Envoy AI Proxy - MCP Message Smuggling Vulnerability

Envoy AI Gateway was found to be affected by a protocol parser differential vulnerability due to improper implementation of the JSON-RPC 2.0 specification. Such differential causes a MCP message alteration, potentially causing a bypass of security controls in a multi-layered architecture. Accordi...

CVE-2026-32239

A flaw was found in the KJ-HTTP component of Cap’n Proto. When processing HTTP messages, a negative Content-Length value could be implicitly converted to an unsigned integer, resulting in an extremely large length value. An attacker could exploit this behavior by sending specially crafted HTTP...