CVE-2026-62299

{"id": "CVE-2026-62299", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62299", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-17T17:11:18.131765Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "coredns", "product": "coredns", "versions": [{"status": "affected", "version": "< 1.14.5"}]}]}], "published": "2026-07-16T20:16:46.693", "references": [{"url": "https://github.com/coredns/coredns/commit/fc447d0658b093edc8cd29a6b171216a44a644c2", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/coredns/coredns/pull/8190", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/coredns/coredns/releases/tag/v1.14.5", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-rrr7", "tags": ["Exploit", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-rrr7", "tags": ["Exploit", "Third Party Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-476"}]}], "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."}], "lastModified": "2026-07-22T20:18:57.970", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:coredns.io:coredns:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "492D3B75-6C90-48C3-AFEE-942373A2578A", "versionEndExcluding": "1.14.5"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}