CVE-2026-83605

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Source
https://cve.org/CVERecord?id=CVE-2026-83605
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83605.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-83605
Aliases
Downstream
AZL (1)
CGA (4)
CLSA (5)
DEBIAN (1)
ECHO (1)
MINI (4)
ROOT (1)
UBUNTU (1)
Published
2026-09-01T14:18:20Z
Modified
2026-10-28T02:30:51Z
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: Attribute name injection via setAttribute() 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, Element.setAttribute() calls the private _createAttribute(name) path without validating the attribute name, while Document.createAttribute(name) validates against QName. XMLSerializer.serializeToString() emits attribute names verbatim, and requireWellFormed: true did not validate them, so a crafted name can terminate the intended attribute and inject additional attributes, including event handlers, into browser-consumed output; synthesized xmlns:PREFIX declarations expose the same unchecked-name boundary. This issue is fixed in @xmldom/xmldom versions 0.8.14 and 0.9.11; no fixed version is available for xmldom.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-91"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83605.json"
}
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
Last Affected
c80a161172cc4d8733583bf0cf59abfa589f6d9e
Introduced
c568938641cc1f121cef5b4df80fcfda1e489b6e
Fixed
8a83f8ebf53604a733cb580bfc4ff9c0ae014d92
Introduced
8c7c7afe89027641aa59c101d20eefedc0f54c6f
Fixed
1f0610959ab7b82cc7ad702d1be0243efc5791c0
Fixed
cba1321218b069182695813fa7565653708e172e
Fixed
d8212e632507eaf1d9f609657dd4c56abeb12d44
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "0.6.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "introduced": "0.7.0"
                },
                {
                    "fixed": "0.8.14"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "introduced": "0.9.0"
                },
                {
                    "fixed": "0.9.11"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "cba1321218b069182695813fa7565653708e172e"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "d8212e632507eaf1d9f609657dd4c56abeb12d44"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "0.8.14",
            "range": [
                {
                    "fixed": "8a83f8ebf53604a733cb580bfc4ff9c0ae014d92"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "original_tag": "0.9.11",
            "range": [
                {
                    "fixed": "1f0610959ab7b82cc7ad702d1be0243efc5791c0"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.1.0
0.1.1
0.1.17
0.1.18
0.1.19
0.1.2
0.1.20
0.1.21
0.1.22
0.1.23
0.1.24
0.1.25
0.1.26
0.1.27
0.2.0
0.2.1
0.3.0
0.4.0
0.5.0
0.6.0
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.*
v0.1.27
v0.1.28-not-published
v0.1.28-xmldom-alpha
v0.7.0
xmldom-aplha@v0.*
xmldom-aplha@v0.1.28

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83605.json"