CVE-2026-62994

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Source

https://cve.org/CVERecord?id=CVE-2026-62994

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62994.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-62994

Aliases

GHSA-74w3-63xv-x9mv

Published

2026-07-16T19:39:05.582Z

Modified

2026-08-12T03:51:47.684415040Z

Severity

3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Summary

CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin

Details

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 k8sexternal headless-service zone transfers and Kubernetes contains a headless service endpoint with no declared ports; plugin/kubernetes/object/endpoint.go creates Port: -1, plugin/k8sexternal/msgtodns.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.

Database specific

{
    "cwe_ids": [
        "CWE-248",
        "CWE-755"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62994.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/coredns/coredns

Affected ranges

Type

GIT

Repo

https://github.com/coredns/coredns

Events

Introduced

1f0a41a66597cb8ab4aace8ea5b5bad880bcd23b

Fixed

adba3b3703408ffe80bc03a7be0f6ea9c2372399

Fixed

ab318db7b4a3a19273852ed627f54888198c8efb

Database specific

Show details

{
    "cpe": "cpe:2.3:a:coredns.io:coredns:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "1.9.4"
        },
        {
            "fixed": "1.14.5"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v1.*

v1.10.0

v1.10.1

v1.11.0

v1.11.1

v1.11.3

v1.11.4

v1.12.0

v1.12.1

v1.12.2

v1.12.3

v1.12.4

v1.13.0

v1.13.1

v1.13.2

v1.14.0

v1.14.1

v1.14.2

v1.14.3

v1.14.4

v1.9.4

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62994.json"