{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-83607",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-31T20:36:25.743Z",
        "datePublished": "2026-09-01T14:23:58.797Z",
        "dateUpdated": "2026-09-01T14:23:58.797Z"
    },
    "containers": {
        "cna": {
            "title": "xmldom: Element name injection via createElement() bypasses requireWellFormed",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-91",
                            "lang": "en",
                            "description": "CWE-91: XML Injection (aka Blind XPath Injection)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "NONE",
                        "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:H/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/xmldom/xmldom/security/advisories/GHSA-w2rr-34g9-rvrj",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-w2rr-34g9-rvrj"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/pull/1043",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/pull/1043"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/pull/1050",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/pull/1050"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/commit/cba1321218b069182695813fa7565653708e172e",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/commit/cba1321218b069182695813fa7565653708e172e"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/commit/d8212e632507eaf1d9f609657dd4c56abeb12d44",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/commit/d8212e632507eaf1d9f609657dd4c56abeb12d44"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/releases/tag/0.8.14",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/releases/tag/0.8.14"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/releases/tag/0.9.11",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/releases/tag/0.9.11"
                }
            ],
            "affected": [
                {
                    "vendor": "xmldom",
                    "product": "xmldom",
                    "versions": [
                        {
                            "version": "<= 0.6.0",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@xmldom",
                    "product": "xmldom",
                    "versions": [
                        {
                            "version": ">= 0.7.0, < 0.8.14",
                            "status": "affected"
                        },
                        {
                            "version": ">= 0.9.0, < 0.9.11",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-01T14:23:58.797Z"
            },
            "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 0.8.14 and 0.9.11, and in xmldom version 0.6.0 and earlier, Document.createElement(tagName) stores an unvalidated element name and XMLSerializer.serializeToString() emits that name verbatim. The requireWellFormed: true path did not validate the element qualified name or synthesized xmlns:PREFIX declaration, so attacker-controlled tag names could inject attributes, elements, or processing instructions into serialized XML or HTML and could cause cross-site scripting when browser-consumed. The unchecked values violate the XML QName constraint, and default serialization and creation-time createElement() behavior remain permissive. This issue is fixed in @xmldom/xmldom versions 0.8.14 and 0.9.11; no fixed version is available for xmldom."
                }
            ],
            "source": {
                "advisory": "GHSA-w2rr-34g9-rvrj",
                "discovery": "UNKNOWN"
            }
        }
    }
}