tRPC 11 WebSocket DoS Vulnerability

Description

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.

Recommendation

Update the @trpc/server package to the latest compatible version. Followings are version details:

• Affected version(s): >= 11.0.0, < 11.1.1
• Patched version(s): 11.1.1

References

• GHSA-pj3v-9cm8-gvj8
• CVE-2025-43855
• CWE-248
• CWE-460
• CAPEC-310
• OWASP 2021-A6

Related Issues

• tRPC has possible prototype pollution in `experimental_nextAppDirCaller` - CVE-2025-68130
• @octokit/request-error has a Regular Expression in index that Leads to ReDoS Vulnerability Due to Catastrophic Backtrack - CVE-2025-25289
• smartbanner.js rel noopener vulnerability - CVE-2025-25300
• @octokit/plugin-paginate-rest has a Regular Expression in iterator Leads to ReDoS Vulnerability Due to Catastrophic Back - CVE-2025-25288

Tags:

npm

@trpc/server