{"action":"Upgrade libidn2 to 2.2.0-r0 or later.","affected":[{"fixed":"2.2.0-r0","introduced":"0"}],"component":"libidn2","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.24","exploited":false,"fixed_versions":["2.2.0-r0"],"id":"tcs_01M5NB72JS4BMEJ5GF8J2409T5","modified_at":"2026-09-21T06:17:52.463379808Z","published_at":"2019-10-22T16:15:10.877Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2019-12290","https://security.alpinelinux.org/vuln/CVE-2019-12290"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2019-12290#Alpine:v3.24/libidn2","url":"https://osv.dev/vulnerability/ALPINE-CVE-2019-12290"}],"summary":"GNU libidn2 before 2.2.0 fails to perform the roundtrip checks specified in RFC3490 Section 4.2 when converting A-labels to U-labels. This makes it possible in some circumstances for one domain to imp"}