CVE-2026-56317

Name: CVE-2026-56317
Creator: NVD / NIST
Published: 2026-06-20T16:17:05.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.3/10EPSS 0.21%

Last modified Jun 24, 2026

CVE-2026-56317 is a low-severity vulnerability rated 2.3/10 on the CVSS scale. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS 4.0

2.3/10

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:X/V:X/RE:X/U:X

EPSS Probability

0.21%

11.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Nuxt	Nuxt	< 3.21.7
Nuxt	Nuxt	>= 4.0.0, < 4.4.7

References

https://github.com/nuxt/nuxt/commit/4b054e9d95f8daf366cb144b52782047c511a66ePatch
https://github.com/nuxt/nuxt/commit/7fea9fd687f1dacbfb63db5fae5839896b017a0ePatch
https://github.com/nuxt/nuxt/security/advisories/GHSA-m3q2-p4fw-w38mMitigation, Patch, Vendor Advisory
https://www.vulncheck.com/advisories/nuxt-cross-site-scripting-via-noscript-component-slot-contentPatch, Third Party Advisory

Timeline

Published: Jun 20, 2026
Last Modified: Jun 24, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-56317?

How severe is CVE-2026-56317?

CVE-2026-56317 has a CVSS score of 2.3/10 (LOW severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2026-56317?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-56317?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST