CVE-2026-47200

Nuxt CVE-2026-47200 affects Nuxt 3.11.0–3.21.5 and 4.0.0-alpha.1–4.4.5 with experimental.componentIslands enabled. Server islands under /_nuxt_island/page * for .server.vue pages could bypass route middleware, exposing server-rendered content without Vue Router middleware running. Patch applied i...

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

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...

Authentication Bypass Using an Alternate Path or Channel

Overview Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel in the route middleware. An attacker can gain unauthorized access to server-rendered page content by directly requesting the /nuxtisland/page endpoint, bypassing authentication or...

Authentication Bypass Using an Alternate Path or Channel

Overview @nuxt/nitro-server is a Nitro server integration for Nuxt Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel in the route middleware. An attacker can gain unauthorized access to server-rendered page content by directly requesting...

GHSA-HG3F-28RG-4JXJ Nuxt's route middleware is not enforced when rendering `.server.vue` pages via `/__nuxt_island/page_*`

Summary 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 and exposed via the /nuxtisland/:name endpoint. Until this fix, requests through that endpoint rendered the page component...

PT-2026-45028

Name of the Vulnerable Software and Affected Versions Nuxt versions 3.11.0 through 3.21.5 Nuxt versions 4.0.0-alpha.1 through 4.4.5 @nuxt/nitro-server versions 3.20.0 through 3.21.5 @nuxt/nitro-server versions 4.0.0-alpha.1 through 4.4.5 Description When experimental.componentIslands is enabled,...

CSS injection using component islands and useHead

Description After a component island render, the resulting head is regex'd for tags. This regex is not very robust and can be tricked, allowing for CSS injection. Proof of Concept app.vue vue Nuxt 3 Playground const title = ref nuxt.config.ts ts export default defineNuxtConfig experimental:...