modelcontextprotocol php-sdk vulnerabilities (CVE)

CVE records published for modelcontextprotocol php-sdk, newest first. Follow to get an email when a new one appears.

1 results

6.9Medium

CVE-2026-53965 2 months ago

MCP PHP SDK: Unbounded SSE buffer in HttpTransport enables client-side denial of service

modelcontextprotocol php-sdk

The MCP PHP SDK (Composer package mcp/sdk) is the official Model Context Protocol SDK for PHP. In versions 0.5.0 through 0.7.0, the HTTP client transport reads a Server-Sent Events response stream incrementally and appends each chunk to an in-memory buffer wi…