{"id":"ALPINE-CVE-2026-4891","details":"A heap-based out-of-bounds read vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.","modified":"2026-09-14T16:18:08.212781659Z","published":"2026-05-11T18:16:41.380Z","upstream":["CVE-2026-4891"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2026-4891"}],"affected":[{"package":{"name":"dnsmasq","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/dnsmasq?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.91-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-4891.json"}},{"package":{"name":"dnsmasq","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/dnsmasq?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.91-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-4891.json"}},{"package":{"name":"dnsmasq","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/dnsmasq?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.92_p2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-4891.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:L/I:N/A:N"}]}