{"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"}}]}}

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