CVE-2026-56317
Nuxt - Cross-Site Scripting via NoScript Component Slot Content
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.
INFO
Published Date :
June 20, 2026, 4:17 p.m.
Last Modified :
June 24, 2026, 7:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update Nuxt to version 4.4.7 or later.
- Update Nuxt 3.x branch to version 3.21.7 or later.
- Sanitize untrusted data before rendering in NoScript slots.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-56317.
| URL | Resource |
|---|---|
| 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 | Mitigation Patch Vendor Advisory |
| https://www.vulncheck.com/advisories/nuxt-cross-site-scripting-via-noscript-component-slot-content | Patch Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-56317 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-56317
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-56317 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-56317 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 24, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-56317', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-24T17:52:47.230996Z'} -
Initial Analysis by [email protected]
Jun. 23, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:nuxt:nuxt:*:*:*:*:*:*:*:* versions up to (excluding) 3.21.7 *cpe:2.3:a:nuxt:nuxt:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.4.7 Added Reference Type VulnCheck: https://github.com/nuxt/nuxt/commit/4b054e9d95f8daf366cb144b52782047c511a66e Types: Patch Added Reference Type VulnCheck: https://github.com/nuxt/nuxt/commit/7fea9fd687f1dacbfb63db5fae5839896b017a0e Types: Patch Added Reference Type VulnCheck: https://github.com/nuxt/nuxt/security/advisories/GHSA-m3q2-p4fw-w38m Types: Mitigation, Patch, Vendor Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/nuxt-cross-site-scripting-via-noscript-component-slot-content Types: Patch, Third Party Advisory -
New CVE Received by [email protected]
Jun. 20, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Nuxt', 'product': 'Nuxt', 'versions': [{'status': 'affected', 'version': '4.0.0', 'lessThan': '4.4.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '4.4.7', 'versionType': 'semver'}], 'packageURL': 'pkg:npm/nuxt', 'defaultStatus': 'unaffected'}, {'vendor': 'Nuxt', 'product': 'Nuxt', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '3.21.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '3.21.7', 'versionType': 'semver'}], 'packageURL': 'pkg:npm/nuxt', 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 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 Added CWE CWE-79 Added Reference https://github.com/nuxt/nuxt/commit/4b054e9d95f8daf366cb144b52782047c511a66e Added Reference https://github.com/nuxt/nuxt/commit/7fea9fd687f1dacbfb63db5fae5839896b017a0e Added Reference https://github.com/nuxt/nuxt/security/advisories/GHSA-m3q2-p4fw-w38m Added Reference https://www.vulncheck.com/advisories/nuxt-cross-site-scripting-via-noscript-component-slot-content