{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-83615",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-31T20:36:25.744Z",
        "datePublished": "2026-09-01T14:44:05.884Z",
        "dateUpdated": "2026-09-01T14:44:05.884Z"
    },
    "containers": {
        "cna": {
            "title": "xmldom: Quadratic-memory consumption",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-770",
                            "lang": "en",
                            "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/pull/1071",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/pull/1071"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/pull/1072",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/pull/1072"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/commit/954370f58c046223faf95ba77efcbc8ce014409d",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/commit/954370f58c046223faf95ba77efcbc8ce014409d"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/commit/dabffe884e864eeecb1f515c716f875e1bc47ec1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/commit/dabffe884e864eeecb1f515c716f875e1bc47ec1"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/releases/tag/0.8.15",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/releases/tag/0.8.15"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/releases/tag/0.9.12",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/releases/tag/0.9.12"
                }
            ],
            "affected": [
                {
                    "vendor": "xmldom",
                    "product": "xmldom",
                    "versions": [
                        {
                            "version": ">= 0.1.5, <= 0.6.0",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@xmldom",
                    "product": "xmldom",
                    "versions": [
                        {
                            "version": ">= 0.7.0, < 0.8.15",
                            "status": "affected"
                        },
                        {
                            "version": ">= 0.9.0, < 0.9.12",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-01T14:44:05.884Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom versions 0.1.5 through 0.6.0, appendElement in lib/sax.js uses _copy to clone the complete currentNSMap for each nested element that declares a new namespace prefix. Keeping every ancestor map live on the parse stack creates quadratic peak namespace-map storage, so a small highly compressible XML document can exhaust the process heap before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom."
                }
            ],
            "source": {
                "advisory": "GHSA-965w-775f-mr7g",
                "discovery": "UNKNOWN"
            }
        }
    }
}