CVE-2026-81091 mcp-use Inspector Proxy Server-Side Request Forgery via Caller-Supplied Target URL
PublishedThe proxy middleware in mcp-use's inspector forwards requests to a destination the caller names. mountMcpProxy in libraries/typescript/packages/inspector/src/server/proxy/mcp-proxy.ts read the target from the X-Target-URL header or the __mcp_target parameter and proxied to it wit...