{"id":"ALPINE-CVE-2026-5950","details":"An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions.\nThis issue affects BIND 9 versions 9.18.36 through 9.18.48, 9.20.8 through 9.20.22, 9.21.7 through 9.21.21, 9.18.36-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.","modified":"2026-09-14T16:18:08.241410589Z","published":"2026-05-20T13:16:40.450Z","upstream":["CVE-2026-5950"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2026-5950"}],"affected":[{"package":{"name":"bind","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/bind?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.18.36"},{"fixed":"9.18.49-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-5950.json"}},{"package":{"name":"bind","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/bind?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.18.36"},{"fixed":"9.18.49-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-5950.json"}},{"package":{"name":"bind","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/bind?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.18.36"},{"fixed":"9.20.23-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-5950.json"}},{"package":{"name":"bind","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/bind?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.18.36"},{"fixed":"9.20.23-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-5950.json"}},{"package":{"name":"bind","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/bind?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.18.36"},{"fixed":"9.20.23-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-5950.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}