Low 3.7Published Jul 16, 2026

CVE-2026-62994CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin

Updated under an hour ago (Oct 27, 2026, 11:23 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 3.7 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-248, CWE-755
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jul 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

coredns coredns coredns:coredns (from the name)	from 1.9.4, < 1.14.5	CNA record
coredns.io coredns coredns.io:coredns	from 1.9.4 before 1.14.5	NVD

References

References

https://github.com/coredns/coredns/security/advisories/GHSA-74w3-63xv-x9mv	x-refsource-confirm, exploit, third-party-advisory
https://github.com/coredns/coredns/pull/8207	x-refsource-misc, issue-tracking, patch
https://github.com/coredns/coredns/commit/ab318db7b4a3a19273852ed627f54888198c8efb	x-refsource-misc, patch
https://github.com/coredns/coredns/releases/tag/v1.14.5	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.