{"id":"CVE-2026-62994","revision":"e4d44c021d584d319861d9f4d9201c48","records":[{"revision":"e4d44c021d584d319861d9f4d9201c48","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-62994","aliases":[],"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":0,"publishedAt":"2026-07-16T19:39:05.582+00:00","modifiedAt":"2026-07-17T11:12:51.792+00:00","affected":[{"ecosystem":"Vendor product","name":"coredns","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"coredns\",\n                    \"product\": \"coredns\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.9.4, < 1.14.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","score":3.7,"severity":"LOW"}],"references":["https://github.com/coredns/coredns/security/advisories/GHSA-74w3-63xv-x9mv","https://github.com/coredns/coredns/pull/8207","https://github.com/coredns/coredns/commit/ab318db7b4a3a19273852ed627f54888198c8efb","https://github.com/coredns/coredns/releases/tag/v1.14.5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-62994","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-62994","identifiers":["CVE-2026-62994"]},"retained":false,"historicalAffected":[]}],"coverage":[]}