{"id":"CVE-2026-47703","revision":"2ca72808f56d41ee86daddd01a024b1d","records":[{"revision":"2ca72808f56d41ee86daddd01a024b1d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-47703","aliases":[],"title":"AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle","description":"AdGuard Home is a network-wide software for blocking ads and tracking. Prior to 0.107.75, AdGuard Home's client-triggered DoQ forwarding path to a udp:// upstream reduced backend UDP DNS state by producing dns_id=0 or txid=0 and exposed a quoted-port ICMP source-port oracle, weakening DNS response matching for forwarded queries. This issue is fixed in version 0.107.75.","state":0,"publishedAt":"2026-07-15T16:03:17.047+00:00","modifiedAt":"2026-07-15T17:45:59.434+00:00","affected":[{"ecosystem":"Vendor product","name":"AdGuardHome","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"AdguardTeam\",\n                    \"product\": \"AdGuardHome\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.107.75\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"}],"references":["https://github.com/AdguardTeam/AdGuardHome/security/advisories/GHSA-xgx4-4h9w-53pv"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47703","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-47703","identifiers":["CVE-2026-47703"]},"retained":false,"historicalAffected":[]}],"coverage":[]}