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CVE-2026-71320 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Nuxt is an open-source web development framework for Vue.js. From 3.4.0 until 3.21.10 and 4.5.1, an attacker can inject a template key through /__nuxt_island/ props into a dynamic component when `vue.runtimeCompiler: true` is enabled, causing template execution in the Nitro process. This issue is fixed in 3.21.10 and 4.5.1.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/nuxt/nuxt/commit/5b60017f7f1d5e9384cadf1d6c580b99d583c418	[email protected]	Source CodeVendor
https://github.com/nuxt/nuxt/commit/ee6c846338f4eb75801815dda86df1f494725859	[email protected]	Source CodeVendor
https://github.com/nuxt/nuxt/releases/tag/v3.21.10	[email protected]	Release NotesVendor
https://github.com/nuxt/nuxt/releases/tag/v4.5.1	[email protected]	Release NotesVendor
https://github.com/nuxt/nuxt/security/advisories/GHSA-9473-5f9j-94wq	[email protected]	AdvisoryRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-74	Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')	[email protected]
CWE-94	Improper Control of Generation of Code ('Code Injection')	[email protected]

Affected Products

Product	Versions
Nuxt	>= 3.4.0, < 3.21.10 (semver) >= 4.0.0, < 4.5.1 (semver)
CPE cpe:2.3:a:nuxt:nuxt:::::::: Remediation Upgrade: 3.21.10moderate effort Upgrade: 4.5.1moderate effort Mitigation:low effort Set `vue.runtimeCompiler` to `false` (the default). Mitigation:low effort Do not forward island props into `<component :is>`, `resolveDynamicComponent`, or `h()` without sanitization. Mitigation:low effort Deploy a WAF rule on `/__nuxt_island/` that URL-decodes and JSON-parses the `props` value and blocks any object property named `template` or `render` in the decoded island props, inspecting both query and body for all methods. Note: this only covers direct and browser-originated island requests; initial-SSR internal island renders do not transit the edge and a WAF alone does not close the vector.

Product

Versions

Nuxt

>= 3.4.0, < 3.21.10 (semver)

>= 4.0.0, < 4.5.1 (semver)

CPE

cpe:2.3:a:nuxt:nuxt:*:*:*:*:*:*:*:*

Remediation

Upgrade: 3.21.10moderate effort
Upgrade: 4.5.1moderate effort
Mitigation:low effort
Set `vue.runtimeCompiler` to `false` (the default).
Mitigation:low effort
Do not forward island props into `<component :is>`, `resolveDynamicComponent`, or `h()` without sanitization.
Mitigation:low effort
Deploy a WAF rule on `/__nuxt_island/` that URL-decodes and JSON-parses the `props` value and blocks any object property named `template` or `render` in the decoded island props, inspecting both query and body for all methods. Note: this only covers direct and browser-originated island requests; initial-SSR internal island renders do not transit the edge and a WAF alone does not close the vector.

Change History

3 change records found show changes

Date	Action	Recorded By
Aug 7, 2026	CVE Modified	CISA-ADP
Aug 6, 2026	CVE Modified	CISA-ADP
Aug 5, 2026	New CVE Received	[email protected]