{"action":"Upgrade unbound to 1.23.1-r0 or later.","affected":[{"fixed":"1.23.1-r0","introduced":"0"}],"component":"unbound","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.22","exploited":false,"fixed_versions":["1.23.1-r0"],"id":"tcs_01M5NFERE3STEPCPAPA8HY1Q1X","modified_at":"2026-08-27T22:18:02.996659331Z","published_at":"2025-07-16T15:15:33.490Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2025-5994","https://security.alpinelinux.org/vuln/CVE-2025-5994"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2025-5994#Alpine:v3.22/unbound","url":"https://osv.dev/vulnerability/ALPINE-CVE-2025-5994"}],"summary":"A multi-vendor cache poisoning vulnerability named 'Rebirthday Attack' has been discovered in caching resolvers that support EDNS Client Subnet (ECS). Unbound is also vulnerable when compiled with ECS"}