rmcp: RMCP: Denial of Service via unauthenticated session table leak

A flaw was found in rmcp, a Rust SDK for the Model Context Protocol. An unauthenticated remote attacker can send specially crafted JSON-RPC POST requests to the stateful Streamable HTTP server. These requests cause the server to create and permanently retain session and channel state without prop...

rmcp: RMCP: Denial of Service via unauthenticated session table leak

A flaw was found in rmcp, a Rust SDK for the Model Context Protocol. An unauthenticated remote attacker can send specially crafted JSON-RPC POST requests to the stateful Streamable HTTP server. These requests cause the server to create and permanently retain session and channel state without prop...

PT-2026-93789

Name of the Vulnerable Software and Affected Versions rmcp versions prior to 2.0.0 Description The stateful Streamable HTTP server in the rmcp crate contains a memory leak that can lead to a Denial of Service. An unauthenticated remote attacker can exploit this by sending a well-formed JSON-RPC...

MAL-2026-6988 Malicious code in @vite-tab/tab (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 95af865d1cf7d45f2b4c2a73eebcfcd1a1a6aba9a36f33bf8256ef4d7235903c @vite-tab/tab republishes Vite's codebase under a different name while impersonating the upstream project: package.json declares bin: vite:...

Unbounded JSON-RPC request body causes uncontrolled memory allocation in StreamableHTTPTransport

Summary An unauthenticated remote attacker can force any MCP Ruby SDK server using MCP::Server::Transports::StreamableHTTPTransport to allocate gigabytes of memory by sending a single oversized JSON-RPC POST. The transport reads the entire HTTP body into a Ruby String and parses it with...