{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43678","assignerOrgId":"286789f9-fbc2-4510-9f9a-43facdede74c","state":"PUBLISHED","assignerShortName":"apple","dateReserved":"2026-05-01T22:46:21.641Z","datePublished":"2026-08-20T18:57:03.222Z","dateUpdated":"2026-08-20T21:10:49.702Z"},"containers":{"cna":{"problemTypes":[{"descriptions":[{"lang":"en","description":"An unauthenticated remote peer can crash any NIOWebSocket-based server (including Vapor and Hummingbird) with a single 11-byte frame sent after a completed WebSocket handshake, dropping all active connections until the process restarts."}]}],"affected":[{"vendor":"Apple","product":"swift-nio","versions":[{"version":"0","status":"affected","lessThan":"2.101.0","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"An unauthenticated remote peer can crash any NIOWebSocket-based server (including Vapor and Hummingbird) with a single 11-byte frame sent after a completed WebSocket handshake, dropping all active connections until the process restarts. This vulnerability is addressed in swift-nio version 2.101.0."}],"references":[{"url":"https://github.com/apple/swift-nio/security/advisories/GHSA-qcc5-f287-vgmq"}],"providerMetadata":{"orgId":"286789f9-fbc2-4510-9f9a-43facdede74c","shortName":"apple","dateUpdated":"2026-08-20T21:10:49.702Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-20","lang":"en","description":"CWE-20 Improper Input Validation"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-770","lang":"en","description":"CWE-770 Allocation of Resources Without Limits or Throttling"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-20T19:44:43.228142Z","id":"CVE-2026-43678","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-20T19:44:56.479Z"}}]}}