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Vulnerability record · CVE-2026-56317 · published 20 June 2026

CVE-2026-56317: Nuxt cross-site scripting vulnerability

Nuxt · Nuxt

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.

2.3 CVSS 4.0 Low EPSS 0.34% · top 74.9% CWE-79 · Cross-site scripting
2.3CVSS 4.0 base score
0.34%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
24 Jun 2026Last modified by NVD

Description

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.

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/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/nuxt/nuxt/commit/4b054e9d95f8daf366cb144b52782047c511a66e Patch
https://github.com/nuxt/nuxt/commit/7fea9fd687f1dacbfb63db5fae5839896b017a0e Patch
https://github.com/nuxt/nuxt/security/advisories/GHSA-m3q2-p4fw-w38m MitigationPatchVendor Advisory
https://www.vulncheck.com/advisories/nuxt-cross-site-scripting-via-noscript-component-slot-content PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-56317), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.