{"api_version":"1","generated_at":"2026-07-16T22:39:03+00:00","cve":"CVE-2026-62994","urls":{"html":"https://cve.report/CVE-2026-62994","api":"https://cve.report/api/cve/CVE-2026-62994.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-62994","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-62994"},"summary":{"title":"CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin","description":"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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-07-16 20:16:47","updated_at":"2026-07-16 20:16:47"},"problem_types":["CWE-248","CWE-755","CWE-248 CWE-248: Uncaught Exception","CWE-755 CWE-755: Improper Handling of Exceptional Conditions"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"3.7","severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":3.7,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"3.7","severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","data":{"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":[{"url":"https://github.com/coredns/coredns/commit/ab318db7b4a3a19273852ed627f54888198c8efb","name":"https://github.com/coredns/coredns/commit/ab318db7b4a3a19273852ed627f54888198c8efb","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/coredns/coredns/pull/8207","name":"https://github.com/coredns/coredns/pull/8207","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/coredns/coredns/security/advisories/GHSA-74w3-63xv-x9mv","name":"https://github.com/coredns/coredns/security/advisories/GHSA-74w3-63xv-x9mv","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/coredns/coredns/releases/tag/v1.14.5","name":"https://github.com/coredns/coredns/releases/tag/v1.14.5","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-62994","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62994","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"coredns","product":"coredns","version":"affected >= 1.9.4, < 1.14.5","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"coredns","vendor":"coredns","versions":[{"status":"affected","version":">= 1.9.4, < 1.14.5"}]}],"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."}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-755","description":"CWE-755: Improper Handling of Exceptional Conditions","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-16T19:39:05.582Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"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"}],"source":{"advisory":"GHSA-74w3-63xv-x9mv","discovery":"UNKNOWN"},"title":"CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-62994","datePublished":"2026-07-16T19:39:05.582Z","dateReserved":"2026-07-14T23:10:57.031Z","dateUpdated":"2026-07-16T19:39:05.582Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-16 20:16:47","lastModifiedDate":"2026-07-16 20:16:47","problem_types":["CWE-248","CWE-755","CWE-248 CWE-248: Uncaught Exception","CWE-755 CWE-755: Improper Handling of Exceptional Conditions"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":3.7,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":2.2,"impactScore":1.4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"62994","Ordinal":"1","Title":"CoreDNS `k8s_external` headless AXFR can emit an empty transfer ","CVE":"CVE-2026-62994","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"62994","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"CoreDNS `k8s_external` headless AXFR can emit an empty transfer "}]}}}