CVE-2026-47200: Nuxt

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Nuxt Nuxt: from 3.11.0, before 3.21.6 (fixed in 3.21.6); from 4.0.0, before 4.4.6 (fixed in 4.4.6)
• Nuxt Nuxt/nitro-Server: from 3.20.0, before 3.21.6 (fixed in 3.21.6); from 4.2.0, before 4.4.6 (fixed in 4.4.6)

Published 2026-06-12. Last modified 2026-06-17.