{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-83611",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-31T20:36:25.744Z",
        "datePublished": "2026-09-01T14:34:12.618Z",
        "dateUpdated": "2026-09-01T14:53:37.513Z"
    },
    "containers": {
        "cna": {
            "title": "xmldom: Parser silently accepts a not-well-formed end tag whose name is followed by a line break and trailing content",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1286",
                            "lang": "en",
                            "description": "CWE-1286: Improper Validation of Syntactic Correctness of Input",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 6.9,
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/xmldom/xmldom/security/advisories/GHSA-6h8r-xr42-gp59",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-6h8r-xr42-gp59"
                },
                {
                    "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/4430189660b0d380ee9c9ee7550a1358688e8828",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/commit/4430189660b0d380ee9c9ee7550a1358688e8828"
                },
                {
                    "name": "https://github.com/xmldom/xmldom/commit/7b2ec67e1750daadd0bb06c92e875e726544a362",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xmldom/xmldom/commit/7b2ec67e1750daadd0bb06c92e875e726544a362"
                },
                {
                    "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": "<= 0.6.0",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@xmldom",
                    "product": "xmldom",
                    "versions": [
                        {
                            "version": ">= 0.9.0, < 0.9.12",
                            "status": "affected"
                        },
                        {
                            "version": ">= 0.7.0, < 0.8.15",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-01T14:34:12.618Z"
            },
            "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 version 0.6.0 and earlier, DOMParser.parseFromString() can silently accept an end tag such as </a\\njunk>, close the element, and discard the trailing content. On 0.9.x, the lib/sax.js end-tag validator inherits the multiline flag from reg(), allowing the first line to satisfy the anchored XML ETag production; older lines have no equivalent residue validation. This parser differential can bypass a parse-before-trust well-formedness gate, although it does not inject the discarded content; onError on 0.9.x and errorHandler on 0.8.x are the relevant reporting interfaces. 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-6h8r-xr42-gp59",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-6h8r-xr42-gp59",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-01T14:53:15.050065Z",
                                "id": "CVE-2026-83611",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-09-01T14:53:37.513Z"
                }
            }
        ]
    }
}