{"id":"CVE-2025-43855","state":"PUBLISHED","title":"tRPC 11 WebSocket DoS Vulnerability","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.","publishedAt":"2025-04-24T13:58:30.536Z","updatedAt":"2025-05-14T20:07:29.865Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["trpc trpc"],"affected":[{"vendor":"trpc","product":"trpc","versions":[{"version":">= 11.0.0, < 11.1.1","status":"affected"}]}],"references":["https://github.com/trpc/trpc/security/advisories/GHSA-pj3v-9cm8-gvj8","https://github.com/trpc/trpc/commit/9beb26c636d44852e0f407f3d7a82ad54df65b4d"],"weaknesses":["CWE-248"],"ingestedAt":"2026-10-29T20:09:17.366Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/43xxx/CVE-2025-43855.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-43855","state":"PUBLISHED","datePublished":"2025-04-24T13:58:30.536Z","dateUpdated":"2025-05-14T20:07:29.865Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-04-17T20:07:08.555Z"},"containers":{"cna":{"title":"tRPC 11 WebSocket DoS Vulnerability","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"trpc","product":"trpc","versions":[{"version":">= 11.0.0, < 11.1.1","status":"affected"}]}],"references":[{"url":"https://github.com/trpc/trpc/security/advisories/GHSA-pj3v-9cm8-gvj8","name":"https://github.com/trpc/trpc/security/advisories/GHSA-pj3v-9cm8-gvj8","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/trpc/trpc/commit/9beb26c636d44852e0f407f3d7a82ad54df65b4d","name":"https://github.com/trpc/trpc/commit/9beb26c636d44852e0f407f3d7a82ad54df65b4d","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-248","lang":"en","description":"CWE-248: Uncaught Exception","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-05-14T20:07:29.865Z"},"source":{"advisory":"GHSA-pj3v-9cm8-gvj8","discovery":"UNKNOWN"},"credits":[{"lang":"en","value":"Luke Childs <mail@lu.ke>"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-04-24T14:14:25.436065Z","id":"CVE-2025-43855","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-24T14:17:26.881Z"}}]}}}