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CVE-2026-47200— Nuxt: Route middleware not enforced when rendering `.server.vue` pages via `/__nuxt_island/page_*`

Quick assessment

Affected
nuxt nuxt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nuxt是Nuxt团队开源的一个免费的开源框架。 Nuxt存在安全漏洞，该漏洞源于在启用experimental.componentIslands时，会注册服务器岛端点，未实例化Vue Router导致路由中间件未执行，可能导致安全策略绕过。以下版本受到影响：3.11.0版本至3.21.6之前版本、4.0.0-alpha.1版本至4.4.6之前版本、@nuxt/nitro-server 3.20.0版本至3.21.6之前版本和4.0.0-alpha.1版本至4.4.6之前版本。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.35% · P26

Affected Version Matrix 2

VendorProduct Version RangeStatus
nuxt nuxt >= 3.11.0, < 3.21.6 affected
>= 4.0.0-alpha.1, < 4.4.6 affected
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I. Basic Information for CVE-2026-47200

Vulnerability Information
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Vulnerability Title
Nuxt: Route middleware not enforced when rendering `.server.vue` pages via `/__nuxt_island/page_*`
Source: CVE Program / CVE List V5
Vulnerability Description
Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.11.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6 and @nuxt/nitro-server versions 3.20.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6, when experimental.componentIslands is enabled (default in Nuxt 4), any .server.vue file under pages/ is automatically registered as a server island under the key page_<routeName> and exposed via the /__nuxt_island/:name endpoint. Until this fix, requests through that endpoint rendered the page component directly via the SSR renderer without instantiating Vue Router, which meant route middleware declared on the page (including definePageMeta({ middleware })) did not run. This issue has been patched in versions 3.21.6 and 4.4.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nuxt 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nuxt是Nuxt团队开源的一个免费的开源框架。 Nuxt存在安全漏洞，该漏洞源于在启用experimental.componentIslands时，会注册服务器岛端点，未实例化Vue Router导致路由中间件未执行，可能导致安全策略绕过。以下版本受到影响：3.11.0版本至3.21.6之前版本、4.0.0-alpha.1版本至4.4.6之前版本、@nuxt/nitro-server 3.20.0版本至3.21.6之前版本和4.0.0-alpha.1版本至4.4.6之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nuxt nuxt >= 3.11.0, < 3.21.6 -

II. Public POCs for CVE-2026-47200

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III. Intelligence Information for CVE-2026-47200

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Patches & Fixes for CVE-2026-47200 (1)

Vendor Advisories for CVE-2026-47200 (1)

Same Patch Batch · nuxt · 2026-06-12 · 7 CVEs total

CVE-2026-53721 Nuxt: Route-rule middleware bypass via case-sensitivity mismatch between vue-router and th
CVE-2026-53722 Nuxt: Reflected XSS in `<NuxtLink>` via unsanitised `javascript:` or `data:` URL
CVE-2026-45669 Nuxt: Reflected XSS in `navigateTo()` external redirect
CVE-2026-45670 Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA
CVE-2026-49993 @nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when
CVE-2026-46342 Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling shared-c

IV. Related Vulnerabilities

Same product: nuxt
Same vendor: nuxt
Same weakness: CWE-284

V. Comments for CVE-2026-47200

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