CVE-2026-83617

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-83617
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83617.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-83617
Aliases
Downstream
Published
2026-09-01T14:47:46Z
Modified
2026-10-28T02:30:29Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
xmldom: requireWellFormed element/attribute name validation is bypassable via an embedded line terminator
Details

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.9.11 until 0.9.12, the requireWellFormed: true element and attribute name checks use the anchored QName_exact expression produced by reg() in lib/grammar.js, which inherits the multiline flag. A name with a valid first line followed by U+000A, U+000D, U+2028, or U+2029 and breakout markup therefore passes validation and is emitted verbatim in element start and end tags or attribute names. This bypasses the strict-serialization checks introduced for the earlier element-name and attribute-name injection advisories, while the default serialization path remains outside the strict guarantee. This issue is fixed in @xmldom/xmldom version 0.9.12.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-625",
        "CWE-91"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83617.json"
}
References

Affected packages

Git / github.com/xmldom/xmldom

Affected ranges

Type
GIT
Repo
https://github.com/xmldom/xmldom
Events
Introduced
1f0610959ab7b82cc7ad702d1be0243efc5791c0
Fixed
0af8cf829d8a92bbac612903422c6947f5458f06
Fixed
7b2ec67e1750daadd0bb06c92e875e726544a362
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0.9.11"
                },
                {
                    "fixed": "0.9.12"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "7b2ec67e1750daadd0bb06c92e875e726544a362"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "0.9.12",
            "range": [
                {
                    "fixed": "0af8cf829d8a92bbac612903422c6947f5458f06"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.9.11

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83617.json"