{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-62309",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-13T19:27:58.314Z",
        "datePublished": "2026-07-16T19:42:17.867Z",
        "dateUpdated": "2026-07-18T03:14:46.896Z"
    },
    "containers": {
        "cna": {
            "title": "CoreDNS: proxyproto plugin panics on PPv2 datagram with non-UDP transport — single 28-byte packet remote DoS",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-476",
                            "lang": "en",
                            "description": "CWE-476: NULL Pointer Dereference",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/coredns/coredns/security/advisories/GHSA-9rvv-m5g5-wc8r",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/coredns/coredns/security/advisories/GHSA-9rvv-m5g5-wc8r"
                },
                {
                    "name": "https://github.com/coredns/coredns/pull/8154",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/coredns/coredns/pull/8154"
                },
                {
                    "name": "https://github.com/coredns/coredns/commit/60a439dd4febfcd78e3779e952fe3fbf3c16bb1f",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/coredns/coredns/commit/60a439dd4febfcd78e3779e952fe3fbf3c16bb1f"
                },
                {
                    "name": "https://github.com/coredns/coredns/releases/tag/v1.14.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/coredns/coredns/releases/tag/v1.14.4"
                }
            ],
            "affected": [
                {
                    "vendor": "coredns",
                    "product": "coredns",
                    "versions": [
                        {
                            "version": "< 1.14.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-16T19:42:17.867Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "CoreDNS is a DNS server written in Go. Prior to 1.14.4, a single 28-byte UDP datagram can crash the CoreDNS process when the proxyproto plugin is enabled because plugin/pkg/proxyproto/proxyproto.go PacketConn.ReadFrom handles a PROXY v2 header with non-UDP transport such as family byte 0x11, reassigns addr from a nil readFrom result after parseProxyProtocol errors, and calls addr.String() in the warning log before ServeDNS recovery applies. This issue is fixed in version 1.14.4."
                }
            ],
            "source": {
                "advisory": "GHSA-9rvv-m5g5-wc8r",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-18T03:14:35.332561Z",
                                "id": "CVE-2026-62309",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-07-18T03:14:46.896Z"
                }
            }
        ]
    }
}