{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-32283","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","state":"PUBLISHED","assignerShortName":"Go","dateReserved":"2026-03-11T16:38:46.556Z","datePublished":"2026-04-08T01:06:57.670Z","dateUpdated":"2026-04-13T18:19:55.848Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","shortName":"Go","dateUpdated":"2026-04-08T01:06:57.670Z"},"title":"Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls","descriptions":[{"lang":"en","value":"If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3."}],"affected":[{"vendor":"Go standard library","product":"crypto/tls","collectionURL":"https://pkg.go.dev","packageName":"crypto/tls","versions":[{"version":"0","lessThan":"1.25.9","status":"affected","versionType":"semver"},{"version":"1.26.0-0","lessThan":"1.26.2","status":"affected","versionType":"semver"}],"programRoutines":[{"name":"Conn.handleKeyUpdate"},{"name":"clientHandshakeStateTLS13.establishHandshakeKeys"},{"name":"clientHandshakeStateTLS13.readServerFinished"},{"name":"serverHandshakeStateTLS13.sendServerParameters"},{"name":"serverHandshakeStateTLS13.readClientFinished"},{"name":"Conn.Handshake"},{"name":"Conn.HandshakeContext"},{"name":"Conn.Read"},{"name":"Conn.Write"},{"name":"Dial"},{"name":"DialWithDialer"},{"name":"Dialer.Dial"},{"name":"Dialer.DialContext"},{"name":"QUICConn.HandleData"},{"name":"QUICConn.Start"}],"defaultStatus":"unaffected"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-667: Improper Locking"}]}],"references":[{"url":"https://go.dev/cl/763767"},{"url":"https://go.dev/issue/78334"},{"url":"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"},{"url":"https://pkg.go.dev/vuln/GO-2026-4870"}],"credits":[{"lang":"en","value":"Jakub Ciolek - https://ciolek.dev/"}]},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-04-13T17:51:46.207289Z","id":"CVE-2026-32283","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":"2026-04-13T18:19:55.848Z"}}]}}