Detections
Analytics
CVE-2026-25536
high
Description
MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. From version 1.10.0 to 1.25.3, cross-client response data leak when a single McpServer/Server and transport instance is reused across multiple client connections, most commonly in stateless StreamableHTTPServerTransport deployments. This issue has been patched in version 1.26.0.
References
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25536.json
https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-345p-7cg4-v4c7
https://github.com/modelcontextprotocol/typescript-sdk/issues/243
https://github.com/modelcontextprotocol/typescript-sdk/issues/204
https://bugzilla.redhat.com/show_bug.cgi?id=2436937