CVE-2026-83607

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Source
https://cve.org/CVERecord?id=CVE-2026-83607
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83607.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-83607
Aliases
  • GHSA-w2rr-34g9-rvrj
Downstream
Published
2026-09-01T14:23:58.797Z
Modified
2026-09-03T03:48:19.234209346Z
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: Element name injection via createElement() bypasses requireWellFormed
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83607.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-91"
    ]
}
References

Affected packages

Git / github.com/xmldom/xmldom

Affected ranges

Type
GIT
Repo
https://github.com/xmldom/xmldom
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Introduced
c568938641cc1f121cef5b4df80fcfda1e489b6e
Introduced
8c7c7afe89027641aa59c101d20eefedc0f54c6f
Fixed
8a83f8ebf53604a733cb580bfc4ff9c0ae014d92
Fixed
1f0610959ab7b82cc7ad702d1be0243efc5791c0
Fixed
cba1321218b069182695813fa7565653708e172e
Fixed
d8212e632507eaf1d9f609657dd4c56abeb12d44
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.6.0"
        },
        {
            "introduced": "0.7.0"
        },
        {
            "fixed": "0.8.14"
        },
        {
            "introduced": "0.9.0"
        },
        {
            "fixed": "0.9.11"
        }
    ]
}

Affected versions

0.*
0.7.0
0.7.0+scoped
0.7.0+unscoped
0.7.1
0.7.2
0.7.3
0.8.0
0.8.1
0.8.10
0.8.11
0.8.12
0.8.13
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
0.8.8
0.8.9
0.9.0
0.9.1
0.9.10
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
0.9.8
0.9.9
v0.*
v0.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83607.json"