CVE-2025-43855
CVE-2025-43855 · tRPC 11 WebSocket DoS Vulnerability
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.7 · High · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
trpc
- Versions
- >= 11.0.0, < 11.1.1: Affected
No fix published
@trpc/server npm
- Affected ranges
- SEMVER: ≥ 11.0.0, < 11.1.1
Update to 11.1.1