{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62994", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-14T23:10:57.031Z", "datePublished": "2026-07-16T19:39:05.582Z", "dateUpdated": "2026-07-17T11:12:51.792Z"}, "containers": {"cna": {"title": "CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin", "problemTypes": [{"descriptions": [{"cweId": "CWE-248", "lang": "en", "description": "CWE-248: Uncaught Exception", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-755", "lang": "en", "description": "CWE-755: Improper Handling of Exceptional Conditions", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/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-74w3-63xv-x9mv", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/coredns/coredns/security/advisories/GHSA-74w3-63xv-x9mv"}, {"name": "https://github.com/coredns/coredns/pull/8207", "tags": ["x_refsource_MISC"], "url": "https://github.com/coredns/coredns/pull/8207"}, {"name": "https://github.com/coredns/coredns/commit/ab318db7b4a3a19273852ed627f54888198c8efb", "tags": ["x_refsource_MISC"], "url": "https://github.com/coredns/coredns/commit/ab318db7b4a3a19273852ed627f54888198c8efb"}, {"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": ">= 1.9.4, < 1.14.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-16T19:39:05.582Z"}, "descriptions": [{"lang": "en", "value": "CoreDNS is a DNS server written in Go. From 1.9.4 until 1.14.5, a network DNS client allowed to request AXFR for a CoreDNS zone can trigger a panic when CoreDNS is configured with k8s_external headless-service zone transfers and Kubernetes contains a headless service endpoint with no declared ports; plugin/kubernetes/object/endpoint.go creates Port: -1, plugin/k8s_external/msg_to_dns.go skips that service, plugin/k8s_external/transfer.go sends an empty []dns.RR batch, and plugin/transfer/transfer.go indexes records[0] without checking the batch is non-empty. This issue is fixed in version 1.14.5."}], "source": {"advisory": "GHSA-74w3-63xv-x9mv", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/coredns/coredns/security/advisories/GHSA-74w3-63xv-x9mv", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-17T11:12:32.909197Z", "id": "CVE-2026-62994", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"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": "2026-07-17T11:12:51.792Z"}}]}}

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