{"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 \u2014 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"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-62309", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-18T03:14:35.332561Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-18T03:14:42.449Z"}}], "cna": {"title": "CoreDNS: proxyproto plugin panics on PPv2 datagram with non-UDP transport \u2014 single 28-byte packet remote DoS", "source": {"advisory": "GHSA-9rvv-m5g5-wc8r", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "coredns", "product": "coredns", "versions": [{"status": "affected", "version": "< 1.14.4"}]}], "references": [{"url": "https://github.com/coredns/coredns/security/advisories/GHSA-9rvv-m5g5-wc8r", "name": "https://github.com/coredns/coredns/security/advisories/GHSA-9rvv-m5g5-wc8r", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/coredns/coredns/pull/8154", "name": "https://github.com/coredns/coredns/pull/8154", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/coredns/coredns/commit/60a439dd4febfcd78e3779e952fe3fbf3c16bb1f", "name": "https://github.com/coredns/coredns/commit/60a439dd4febfcd78e3779e952fe3fbf3c16bb1f", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/coredns/coredns/releases/tag/v1.14.4", "name": "https://github.com/coredns/coredns/releases/tag/v1.14.4", "tags": ["x_refsource_MISC"]}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476: NULL Pointer Dereference"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-16T19:42:17.867Z"}}}, "cveMetadata": {"cveId": "CVE-2026-62309", "state": "PUBLISHED", "dateUpdated": "2026-07-18T03:14:46.896Z", "dateReserved": "2026-07-13T19:27:58.314Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-07-16T19:42:17.867Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

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