{"answers":{"affected":"2 open source packages ship an affected version, including @trpc/server.","exploited":"There is no known exploitation of CVE-2025-43855 in the wild and no public exploit code.","fix":"Upgrade @trpc/server to 11.1.1 or later.","what":"CVE-2025-43855 is a high-severity denial of service vulnerability in trpc, published on 24 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-43855 and fix it if it is affected.\n\nWhat it is: CVE-2025-43855 is a high-severity denial of service vulnerability in trpc, published on 24 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-43855 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @trpc/server (npm): affected from 11.0.0; fixed in 11.1.1\n- @trpc/server (npm): affected from 11.0.0; fixed in 11.1.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-43855/ (Markdown: https://insights.sbomify.com/CVE-2025-43855/index.md)","id":"CVE-2025-43855","markdown":"https://insights.sbomify.com/CVE-2025-43855/index.md","name":"CVE-2025-43855","record":{"aliases":["GHSA-pj3v-9cm8-gvj8"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"tRPC WebSocket library","requires_auth":"none","summary":"Unauthenticated attackers can crash tRPC WebSocket servers by sending invalid connection parameters, requiring WebSocket and createContext configuration.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-248","name":"Uncaught Exception"}],"description":"tRPC allows users to build \u0026 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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"tRPC 11 WebSocket DoS Vulnerability","id":"CVE-2025-43855","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":2,"n_references":2,"next":{"headline":"immich allows account hijacking through oauth2","id":"CVE-2025-43856"},"packages":[{"ecosystem":"npm","fixed":["11.1.1"],"introduced":["11.0.0"],"last_affected":[],"package":"@trpc/server","purl":null,"source":"GHSA-pj3v-9cm8-gvj8"},{"ecosystem":"npm","fixed":["11.1.1"],"introduced":["11.0.0"],"last_affected":[],"package":"@trpc/server","purl":"pkg:npm/%40trpc/server","source":"GHSA-pj3v-9cm8-gvj8"}],"prev":{"headline":"DIFY vulnerable to Clickjacking Attack","id":"CVE-2025-43854"},"products":["trpc"],"published":"2025-04-24","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-05-14","vendors":["trpc"]},"summary":"Unauthenticated attackers can crash tRPC WebSocket servers by sending invalid connection parameters, requiring WebSocket and createContext configuration.","url":"https://insights.sbomify.com/CVE-2025-43855/"}