CVE-2026-83613 (GCVE-0-2026-83613)
Vulnerability from cvelistv5 – Published: 2026-09-01 14:38 – Updated: 2026-09-01 14:38
VLAI
EPSS
VEX
Title
xmldom: Quadratic-time attribute deduplication
Summary
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, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode, while NamedNodeMap.setNamedItem in lib/dom.js calls the linear getNamedItem or getNamedItemNS lookup for each insertion. A well-formed element with many distinct attributes therefore requires quadratic comparisons during DOMParser.parseFromString() and can stall a Node.js event loop before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.
Severity
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/xmldom/xmldom/security/advisor… | x_refsource_CONFIRM |
| https://github.com/xmldom/xmldom/pull/1071 | x_refsource_MISC |
| https://github.com/xmldom/xmldom/pull/1072 | x_refsource_MISC |
| https://github.com/xmldom/xmldom/commit/2c548f200… | x_refsource_MISC |
| https://github.com/xmldom/xmldom/commit/cfb09b5db… | x_refsource_MISC |
| https://github.com/xmldom/xmldom/releases/tag/0.8.15 | x_refsource_MISC |
| https://github.com/xmldom/xmldom/releases/tag/0.9.12 | x_refsource_MISC |
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"product": "xmldom",
"vendor": "xmldom",
"versions": [
{
"status": "affected",
"version": "\u003c= 0.6.0"
}
]
},
{
"product": "xmldom",
"vendor": "@xmldom",
"versions": [
{
"status": "affected",
"version": "\u003e= 0.9.0, \u003c 0.9.12"
},
{
"status": "affected",
"version": "\u003e= 0.7.0, \u003c 0.8.15"
}
]
}
],
"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, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode, while NamedNodeMap.setNamedItem in lib/dom.js calls the linear getNamedItem or getNamedItemNS lookup for each insertion. A well-formed element with many distinct attributes therefore requires quadratic comparisons during DOMParser.parseFromString() and can stall a Node.js event loop before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-407",
"description": "CWE-407: Inefficient Algorithmic Complexity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T14:38:49.617Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/xmldom/xmldom/security/advisories/GHSA-8344-3jmq-59r6",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-8344-3jmq-59r6"
},
{
"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/2c548f200cfec991cd5846627ef8f03542309213",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/xmldom/xmldom/commit/2c548f200cfec991cd5846627ef8f03542309213"
},
{
"name": "https://github.com/xmldom/xmldom/commit/cfb09b5dbeb035fdfedc9f01e2bbaf226bf47cf3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/xmldom/xmldom/commit/cfb09b5dbeb035fdfedc9f01e2bbaf226bf47cf3"
},
{
"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"
}
],
"source": {
"advisory": "GHSA-8344-3jmq-59r6",
"discovery": "UNKNOWN"
},
"title": "xmldom: Quadratic-time attribute deduplication"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-83613",
"datePublished": "2026-09-01T14:38:49.617Z",
"dateReserved": "2026-08-31T20:36:25.744Z",
"dateUpdated": "2026-09-01T14:38:49.617Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-83613\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-01T15:17:39.583\",\"lastModified\":\"2026-09-01T15:17:39.583\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode, while NamedNodeMap.setNamedItem in lib/dom.js calls the linear getNamedItem or getNamedItemNS lookup for each insertion. A well-formed element with many distinct attributes therefore requires quadratic comparisons during DOMParser.parseFromString() and can stall a Node.js event loop before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"xmldom\",\"product\":\"xmldom\",\"versions\":[{\"version\":\"\u003c= 0.6.0\",\"status\":\"affected\"}]},{\"vendor\":\"@xmldom\",\"product\":\"xmldom\",\"versions\":[{\"version\":\"\u003e= 0.9.0, \u003c 0.9.12\",\"status\":\"affected\"},{\"version\":\"\u003e= 0.7.0, \u003c 0.8.15\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":8.7,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-407\"}]}],\"references\":[{\"url\":\"https://github.com/xmldom/xmldom/commit/2c548f200cfec991cd5846627ef8f03542309213\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/commit/cfb09b5dbeb035fdfedc9f01e2bbaf226bf47cf3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/pull/1071\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/pull/1072\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/releases/tag/0.8.15\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/releases/tag/0.9.12\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/security/advisories/GHSA-8344-3jmq-59r6\",\"source\":\"security-advisories@github.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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