VULNERABILITY INTELLIGENCE

CVE-2025-43855

EPSS probability0.42%
CISA KEVNot currently listed
Published2025-04-24
Last modified2026-06-17

Description

tRPC allows users to build & consume fully typesafe APIs without schemas or code generation. In versions starting from 11.0.0 to before 11.1.1, an unhandled error is thrown when validating invalid connectionParams which crashes a tRPC WebSocket server. This allows any unauthenticated user to crash a tRPC 11 WebSocket server. Any tRPC 11 server with WebSocket enabled with a createContext method set is vulnerable. This issue has been patched in version 11.1.1.

Weakness classification

  • security-advisories@github.com: CWE-248

Primary references