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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.

PUBLISHED Reserved 2026-05-18 | Published 2026-06-12 | Updated 2026-06-13 | Assigner GitHub_M




MEDIUM: 6.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-284: Improper Access Control

CWE-288: Authentication Bypass Using an Alternate Path or Channel

Product status

>= 3.11.0, < 3.21.6
affected

>= 4.0.0-alpha.1, < 4.4.6
affected

References

github.com/nuxt/nuxt/security/advisories/GHSA-hg3f-28rg-4jxj exploit

github.com/nuxt/nuxt/security/advisories/GHSA-hg3f-28rg-4jxj

github.com/nuxt/nuxt/pull/35092

cve.org (CVE-2026-47200)

nvd.nist.gov (CVE-2026-47200)

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