{"action":"Upgrade dnsmasq to 2.91-1+deb13u1 or later.","affected":[{"fixed":"2.91-1+deb13u1","introduced":"0"}],"component":"dnsmasq","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["2.91-1+deb13u1"],"id":"tcs_01M5NSMTS09VY4CHY0K38HX586","modified_at":"2026-10-01T03:03:07.115709161Z","published_at":"2026-05-11T18:16:41.380Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-4891","https://security-tracker.debian.org/tracker/CVE-2026-4891"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-4891#Debian:13/dnsmasq","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-4891"}],"summary":"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."}