CVE-2026-56317 (GCVE-0-2026-56317)
Vulnerability from cvelistv5 – Published: 2026-06-20 15:21 – Updated: 2026-06-20 15:21
VLAI
Title
Nuxt - Cross-Site Scripting via NoScript Component Slot Content
Summary
Nuxt before 4.4.7 (and the 3.x branch before 3.21.7) contains a cross-site scripting vulnerability in the NoScript component that writes slot content to innerHTML without escaping. Attackers can inject malicious scripts through untrusted data in NoScript slots, such as route.query parameters, which execute in the document context when the noscript tag is implicitly closed by script tags.
Severity
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/nuxt/nuxt/security/advisories/… | vendor-advisory |
| https://github.com/nuxt/nuxt/commit/4b054e9d95f8d… | patch |
| https://github.com/nuxt/nuxt/commit/7fea9fd687f1d… | patch |
| https://www.vulncheck.com/advisories/nuxt-cross-s… | third-party-advisory |
Impacted products
Date Public
2026-06-02 00:00
Credits
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageURL": "pkg:npm/nuxt",
"product": "Nuxt",
"vendor": "Nuxt",
"versions": [
{
"lessThan": "4.4.7",
"status": "affected",
"version": "4.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.4.7",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"packageURL": "pkg:npm/nuxt",
"product": "Nuxt",
"vendor": "Nuxt",
"versions": [
{
"lessThan": "3.21.7",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "3.21.7",
"versionType": "semver"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:nuxt:nuxt:*:*:*:*:*:node.js:*:*",
"versionEndExcluding": "4.4.7",
"versionStartIncluding": "4.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:nuxt:nuxt:*:*:*:*:*:node.js:*:*",
"versionEndExcluding": "3.21.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "alcls01111"
}
],
"datePublic": "2026-06-02T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Nuxt before 4.4.7 (and the 3.x branch before 3.21.7) contains a cross-site scripting vulnerability in the NoScript component that writes slot content to innerHTML without escaping. Attackers can inject malicious scripts through untrusted data in NoScript slots, such as route.query parameters, which execute in the document context when the noscript tag is implicitly closed by script tags."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 2.3,
"baseSeverity": "LOW",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-20T15:21:56.449Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GHSA Advisory GHSA-m3q2-p4fw-w38m",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-m3q2-p4fw-w38m"
},
{
"name": "https://github.com/nuxt/nuxt/commit/4b054e9d95f8daf366cb144b52782047c511a66e",
"tags": [
"patch"
],
"url": "https://github.com/nuxt/nuxt/commit/4b054e9d95f8daf366cb144b52782047c511a66e"
},
{
"name": "https://github.com/nuxt/nuxt/commit/7fea9fd687f1dacbfb63db5fae5839896b017a0e",
"tags": [
"patch"
],
"url": "https://github.com/nuxt/nuxt/commit/7fea9fd687f1dacbfb63db5fae5839896b017a0e"
},
{
"name": "VulnCheck Advisory: Nuxt - Cross-Site Scripting via NoScript Component Slot Content",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/nuxt-cross-site-scripting-via-noscript-component-slot-content"
}
],
"title": "Nuxt - Cross-Site Scripting via NoScript Component Slot Content",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-56317",
"datePublished": "2026-06-20T15:21:56.449Z",
"dateReserved": "2026-06-20T12:59:07.917Z",
"dateUpdated": "2026-06-20T15:21:56.449Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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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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