{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-39836","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","state":"PUBLISHED","assignerShortName":"Go","dateReserved":"2026-04-07T18:13:03.529Z","datePublished":"2026-05-07T19:41:18.300Z","dateUpdated":"2026-05-08T21:30:15.127Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","shortName":"Go","dateUpdated":"2026-05-07T19:41:18.300Z"},"title":"Panic in Dial and LookupPort when handling NUL byte on Windows in net","descriptions":[{"lang":"en","value":"The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0)."}],"affected":[{"vendor":"Go standard library","product":"net","collectionURL":"https://pkg.go.dev","packageName":"net","versions":[{"version":"0","lessThan":"1.25.10","status":"affected","versionType":"semver"},{"version":"1.26.0-0","lessThan":"1.26.3","status":"affected","versionType":"semver"}],"programRoutines":[{"name":"Resolver.lookupPort"},{"name":"Resolver.lookupAddr"},{"name":"Resolver.lookupTXT"},{"name":"Resolver.lookupNS"},{"name":"Resolver.lookupMX"},{"name":"Resolver.lookupSRV"},{"name":"Dial"},{"name":"DialTimeout"},{"name":"Dialer.Dial"},{"name":"Dialer.DialContext"},{"name":"Listen"},{"name":"ListenConfig.Listen"},{"name":"ListenConfig.ListenPacket"},{"name":"ListenPacket"},{"name":"LookupAddr"},{"name":"LookupCNAME"},{"name":"LookupHost"},{"name":"LookupIP"},{"name":"LookupMX"},{"name":"LookupNS"},{"name":"LookupPort"},{"name":"LookupSRV"},{"name":"LookupTXT"},{"name":"ResolveIPAddr"},{"name":"ResolveTCPAddr"},{"name":"ResolveUDPAddr"},{"name":"Resolver.LookupAddr"},{"name":"Resolver.LookupCNAME"},{"name":"Resolver.LookupHost"},{"name":"Resolver.LookupIP"},{"name":"Resolver.LookupIPAddr"},{"name":"Resolver.LookupMX"},{"name":"Resolver.LookupNS"},{"name":"Resolver.LookupNetIP"},{"name":"Resolver.LookupPort"},{"name":"Resolver.LookupSRV"},{"name":"Resolver.LookupTXT"}],"defaultStatus":"unaffected"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-248: Uncaught Exception"}]}],"references":[{"url":"https://go.dev/issue/79006"},{"url":"https://groups.google.com/g/golang-announce/c/qcCIEXso47M"},{"url":"https://go.dev/cl/775320"},{"url":"https://pkg.go.dev/vuln/GO-2026-4971"}]},"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":"2026-05-08T16:36:25.079035Z","id":"CVE-2026-39836","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":"2026-05-08T21:30:15.127Z"}}]}}