{"action":"Upgrade go to 1.26.8-r0 or later.","affected":[{"fixed":"1.26.8-r0","introduced":"0"}],"component":"go","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.24","exploited":false,"fixed_versions":["1.26.8-r0"],"id":"tcs_01M6H2X51NQJ70AF50SF64KECZ","modified_at":"2026-11-03T06:32:55.341287332Z","published_at":"2026-05-22T16:16:20.410Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2026-39821","https://security.alpinelinux.org/vuln/CVE-2026-39821"],"severity":{"label":"critical","score":9.6},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2026-39821","url":"https://osv.dev/vulnerability/ALPINE-CVE-2026-39821"}],"summary":"The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode(\"xn--example-.com\") incorrectly returns the name \"example.com\""}