{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-62299","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-07-13T18:37:08.489Z","datePublished":"2026-07-16T19:44:36.475Z","dateUpdated":"2026-07-17T18:06:37.349Z"},"containers":{"cna":{"title":"CoreDNS: rewrite-plugin EDNS0 response-revert nil-pointer panic (remote DoS) when a downstream plugin returns a response with no OPT record","problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","description":"CWE-476: NULL Pointer Dereference","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}}],"references":[{"name":"https://github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-rrr7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-rrr7"},{"name":"https://github.com/coredns/coredns/pull/8190","tags":["x_refsource_MISC"],"url":"https://github.com/coredns/coredns/pull/8190"},{"name":"https://github.com/coredns/coredns/commit/fc447d0658b093edc8cd29a6b171216a44a644c2","tags":["x_refsource_MISC"],"url":"https://github.com/coredns/coredns/commit/fc447d0658b093edc8cd29a6b171216a44a644c2"},{"name":"https://github.com/coredns/coredns/releases/tag/v1.14.5","tags":["x_refsource_MISC"],"url":"https://github.com/coredns/coredns/releases/tag/v1.14.5"}],"affected":[{"vendor":"coredns","product":"coredns","versions":[{"version":"< 1.14.5","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-16T19:44:36.475Z"},"descriptions":[{"lang":"en","value":"CoreDNS is a DNS server written in Go. Prior to 1.14.5, the CoreDNS rewrite plugin supports edns0 rewrite rules with an optional revert flag, and two response rules, edns0SetResponseRule and edns0ReplaceResponseRule[T] in plugin/rewrite/edns0.go, call res.IsEdns0() and immediately dereference the returned *dns.OPT without a nil check when a downstream plugin returns a response with no OPT record. A remote, unauthenticated client can send a single ordinary DNS query matching a rewrite edns0 <local|nsid|subnet> <set|append|replace> ... revert rule, causing ResponseReverter in plugin/rewrite/reverter.go to panic, return SERVFAIL, and degrade availability, or crash the CoreDNS process if the debug directive disables recovery. This issue is fixed in version 1.14.5."}],"source":{"advisory":"GHSA-9pmm-cxww-rrr7","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-rrr7","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-17T17:11:18.131765Z","id":"CVE-2026-62299","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-17T18:06:37.349Z"}}]}}