{"action":"Upgrade dnsmasq to 2.90-4~deb12u2 or later.","affected":[{"fixed":"2.90-4~deb12u2","introduced":"0"}],"component":"dnsmasq","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2.90-4~deb12u2"],"id":"tcs_01M5NSMWY2VFYEXD2FAVYRMEGA","modified_at":"2026-10-01T03:03:07.688464529Z","published_at":"2026-05-11T18:16:41.593Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-4893","https://security-tracker.debian.org/tracker/CVE-2026-4893"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-4893","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-4893"}],"summary":"An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information."}