Vulnerability · Published Jun 20, 2026 · Assigned by VulnCheck

CVE-2026-56317Nuxt - Cross-Site Scripting via NoScript Component Slot Content

Low 2.3

In plain English

A low-severity cross-site scripting in Nuxt from Nuxt. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)2.3Low

Exploit odds (30 days)0.3%top 72.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	nuxt	4.4.7	GHSA-m3q2-p4fw-w38m
npm	nuxt	3.21.7	GHSA-m3q2-p4fw-w38m

Affected products (as reported)

Vendor	Product	Versions
Nuxt	Nuxt	4.0.0 – before 4.4.7
Nuxt	Nuxt	0 – before 3.21.7

Weakness: CWE-79 · Vector: 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

References

GHSA Advisory GHSA-m3q2-p4fw-w38m vendor-advisory
https://github.com/nuxt/nuxt/commit/4b054e9d95f8daf366cb144b52782047c511a66e patch
https://github.com/nuxt/nuxt/commit/7fea9fd687f1dacbfb63db5fae5839896b017a0e patch
VulnCheck Advisory: Nuxt - Cross-Site Scripting via NoScript Component Slot Content third-party-advisory