CVE-2025-43855

HIGH EPSS 26.8%
Published Apr 24, 20251y ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
High
Find Similar
Published Apr 24, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.7
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
26.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-248

References 2

  • github.com https://github.com/trpc/trpc/commit/9beb26c636d44852e0f407f3d7a82ad54df65b4d
  • github.com https://github.com/trpc/trpc/security/advisories/GHSA-pj3v-9cm8-gvj8

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.