{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-73507",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-12T19:00:33.736Z",
        "datePublished": "2026-08-13T14:25:34.073Z",
        "dateUpdated": "2026-08-13T14:25:34.073Z"
    },
    "containers": {
        "cna": {
            "title": "Netty: Denial of Service in XmlFrameDecoder via CPU Exhaustion",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-400",
                            "lang": "en",
                            "description": "CWE-400: Uncontrolled Resource Consumption",
                            "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/netty/netty/security/advisories/GHSA-v74w-7mr3-4qg3",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/netty/netty/security/advisories/GHSA-v74w-7mr3-4qg3"
                },
                {
                    "name": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b"
                },
                {
                    "name": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6"
                },
                {
                    "name": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final"
                },
                {
                    "name": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final"
                }
            ],
            "affected": [
                {
                    "vendor": "netty",
                    "product": "netty",
                    "versions": [
                        {
                            "version": "< 4.1.136.Final",
                            "status": "affected"
                        },
                        {
                            "version": ">= 4.2.0.Final, < 4.2.16.Final",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-13T14:25:34.073Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.xml.XmlFrameDecoder.decode() failed to preserve closing-tag parser state across invocations, so an unauthenticated remote attacker could trickle-feed repeated </ sequences that repeatedly rescanned the accumulated buffer and exhausted an EventLoop thread's CPU, causing denial of service with a maxFrameLength of 1 MB. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final."
                }
            ],
            "source": {
                "advisory": "GHSA-v74w-7mr3-4qg3",
                "discovery": "UNKNOWN"
            }
        }
    }
}