{"id":"CVE-2026-39836","revision":"154188b9f2bc4c2ab81bc97c71218b79","records":[{"revision":"154188b9f2bc4c2ab81bc97c71218b79","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-39836","aliases":[],"title":"Panic in Dial and LookupPort when handling NUL byte on Windows in net","description":"The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).","state":0,"publishedAt":"2026-05-07T19:41:18.3+00:00","modifiedAt":"2026-05-08T21:30:15.127+00:00","affected":[{"ecosystem":"https://pkg.go.dev","name":"net","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Go standard library\",\n                    \"product\": \"net\",\n                    \"collectionURL\": \"https://pkg.go.dev\",\n                    \"packageName\": \"net\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"1.25.10\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"1.26.0-0\",\n                            \"lessThan\": \"1.26.3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"programRoutines\": [\n                        {\n                            \"name\": \"Resolver.lookupPort\"\n                        },\n                        {\n                            \"name\": \"Resolver.lookupAddr\"\n                        },\n                        {\n                            \"name\": \"Resolver.lookupTXT\"\n                        },\n                        {\n                            \"name\": \"Resolver.lookupNS\"\n                        },\n                        {\n                            \"name\": \"Resolver.lookupMX\"\n                        },\n                        {\n                            \"name\": \"Resolver.lookupSRV\"\n                        },\n                        {\n                            \"name\": \"Dial\"\n                        },\n                        {\n                            \"name\": \"DialTimeout\"\n                        },\n                        {\n                            \"name\": \"Dialer.Dial\"\n                        },\n                        {\n                            \"name\": \"Dialer.DialContext\"\n                        },\n                        {\n                            \"name\": \"Listen\"\n                        },\n                        {\n                            \"name\": \"ListenConfig.Listen\"\n                        },\n                        {\n                            \"name\": \"ListenConfig.ListenPacket\"\n                        },\n                        {\n                            \"name\": \"ListenPacket\"\n                        },\n                        {\n                            \"name\": \"LookupAddr\"\n                        },\n                        {\n                            \"name\": \"LookupCNAME\"\n                        },\n                        {\n                            \"name\": \"LookupHost\"\n                        },\n                        {\n                            \"name\": \"LookupIP\"\n                        },\n                        {\n                            \"name\": \"LookupMX\"\n                        },\n                        {\n                            \"name\": \"LookupNS\"\n                        },\n                        {\n                            \"name\": \"LookupPort\"\n                        },\n                        {\n                            \"name\": \"LookupSRV\"\n                        },\n                        {\n                            \"name\": \"LookupTXT\"\n                        },\n                        {\n                            \"name\": \"ResolveIPAddr\"\n                        },\n                        {\n                            \"name\": \"ResolveTCPAddr\"\n                        },\n                        {\n                            \"name\": \"ResolveUDPAddr\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupAddr\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupCNAME\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupHost\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupIP\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupIPAddr\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupMX\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupNS\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupNetIP\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupPort\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupSRV\"\n                        },\n                        {\n                            \"name\": \"Resolver.LookupTXT\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[],"references":["https://go.dev/issue/79006","https://groups.google.com/g/golang-announce/c/qcCIEXso47M","https://go.dev/cl/775320","https://pkg.go.dev/vuln/GO-2026-4971"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-39836","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-39836","identifiers":["CVE-2026-39836"]},"retained":false,"historicalAffected":[]}],"coverage":[]}