{"id":"CVE-2021-4236","state":"PUBLISHED","title":"Panic or authentication bypass in github.com/ecnepsnai/web","description":"Web Sockets do not execute any AuthenticateMethod methods which may be set, leading to a nil pointer dereference if the returned UserData pointer is assumed to be non-nil, or authentication bypass. This issue only affects WebSockets with an AuthenticateMethod hook. Request handlers that do not explicitly use WebSockets are not vulnerable.","publishedAt":"2022-12-27T21:13:45.711Z","updatedAt":"2025-04-11T16:20:55.821Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"Go","products":["github.com/ecnepsnai/web github.com/ecnepsnai/web"],"affected":[{"vendor":"github.com/ecnepsnai/web","product":"github.com/ecnepsnai/web","packageName":"github.com/ecnepsnai/web","defaultStatus":"unaffected","versions":[{"version":"1.4.0","status":"affected","lessThan":"1.5.2","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"Server.socketHandler"},{"name":"Server.Socket"}]}],"references":["https://github.com/ecnepsnai/web/commit/5a78f8d5c41ce60dcf9f61aaf47a7a8dc3e0002f","https://pkg.go.dev/vuln/GO-2021-0107"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:23.890Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/4xxx/CVE-2021-4236.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-4236","state":"PUBLISHED","datePublished":"2022-12-27T21:13:45.711Z","dateUpdated":"2025-04-11T16:20:55.821Z","assignerShortName":"Go","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateReserved":"2022-07-29T19:01:04.923Z"},"containers":{"cna":{"title":"Panic or authentication bypass in github.com/ecnepsnai/web","descriptions":[{"lang":"en","value":"Web Sockets do not execute any AuthenticateMethod methods which may be set, leading to a nil pointer dereference if the returned UserData pointer is assumed to be non-nil, or authentication bypass. This issue only affects WebSockets with an AuthenticateMethod hook. Request handlers that do not explicitly use WebSockets are not vulnerable."}],"affected":[{"vendor":"github.com/ecnepsnai/web","product":"github.com/ecnepsnai/web","packageName":"github.com/ecnepsnai/web","defaultStatus":"unaffected","versions":[{"version":"1.4.0","status":"affected","lessThan":"1.5.2","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"Server.socketHandler"},{"name":"Server.Socket"}]}],"references":[{"url":"https://github.com/ecnepsnai/web/commit/5a78f8d5c41ce60dcf9f61aaf47a7a8dc3e0002f"},{"url":"https://pkg.go.dev/vuln/GO-2021-0107"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-400: Uncontrolled Resource Consumption"}]}],"providerMetadata":{"shortName":"Go","orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateUpdated":"2023-06-12T19:04:11.139Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/ecnepsnai/web/commit/5a78f8d5c41ce60dcf9f61aaf47a7a8dc3e0002f","tags":["x_transferred"]},{"url":"https://pkg.go.dev/vuln/GO-2021-0107","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T17:23:10.220Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-04-11T16:20:37.403821Z","id":"CVE-2021-4236","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-11T16:20:55.821Z"}}]}}}