CVE-2026-71321

Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, the internal island renderer endpoint /nuxtisland/... decodes and hashes attacker-controlled JSON body input with destr and ohash before validating the URL-resident hash. An unauthenticated POST...

CVE-2026-71318

Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, an attacker can supply a top-level as prop to the /nuxtisland/ endpoint and drive dynamic component resolution through , resolveDynamicComponent, or h. This issue is fixed in 3.21.10 and 4.5.1...

NPM: Nuxt: Unauthenticated CPU exhaustion parsing and hashing the Nuxt island endpoint body before hash validation

NPM: Nuxt: Unauthenticated CPU exhaustion parsing and hashing the Nuxt island endpoint body before hash validation vulnerability discovered by ? in WordPress Npm nuxt versions = 3.1.0, 3.21.10...

Nuxt: Unauthenticated CPU exhaustion parsing and hashing the Nuxt island endpoint body before hash validation

Impact The internal island renderer endpoint /nuxtisland/... decodes and hashes attacker-controlled request input before it validates the URL-resident hash. An unauthenticated POST /nuxtisland/.json with a large JSON body for example 4.6 MB / 150k keys is fully read, destr-parsed, and run through...

CVE-2026-71321 Nuxt: Unauthenticated CPU exhaustion parsing and hashing the Nuxt island endpoint body before hash validation

Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, the internal island renderer endpoint /nuxtisland/... decodes and hashes attacker-controlled JSON body input with destr and ohash before validating the URL-resident hash. An unauthenticated POST...

CVE-2026-71321 Nuxt: Unauthenticated CPU exhaustion parsing and hashing the Nuxt island endpoint body before hash validation

Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, the internal island renderer endpoint /nuxtisland/... decodes and hashes attacker-controlled JSON body input with destr and ohash before validating the URL-resident hash. An unauthenticated POST...

CVE-2026-71321

Nuxt.js vulnerability CVE-2026-71321 affects the island rendering endpoint in Nuxt before fixed versions 3.21.10 and 4.5.1. An unauthenticated POST to POST /__nuxt_island/_.json with a large JSON body is fully read, parsed, then hashed using destr and ohash before URL-resident hash validation, ca...

EUVD-2026-53658

Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, the internal island renderer endpoint /nuxtisland/... decodes and hashes attacker-controlled JSON body input with destr and ohash before validating the URL-resident hash. An unauthenticated POST...

EUVD-2026-53647

Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, an attacker can supply a top-level as prop to the /nuxtisland/ endpoint and drive dynamic component resolution through , resolveDynamicComponent, or h. This issue is fixed in 3.21.10 and 4.5.1...

CVE-2026-71318

Nuxt (Vue.js framework) is affected in versions 3.1.0 through 3.21.10 and 4.5.1 where a top-level as prop to the /__nuxt_island/ endpoint can drive dynamic component resolution via , resolveDynamicComponent, or h(). This allows potential unauthorized component instantiation as described in the CV...

CVE-2026-71318 Nuxt: Unauthorized Component Instantiation via Server Island Props

Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, an attacker can supply a top-level as prop to the /nuxtisland/ endpoint and drive dynamic component resolution through , resolveDynamicComponent, or h. This issue is fixed in 3.21.10 and 4.5.1...

CVE-2026-46342

Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 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, the /nuxtisland/ endpoint accepts attacker-controlled props query/body...

CVE-2026-46342 Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling shared-cache poisoning

Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 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, the /nuxtisland/ endpoint accepts attacker-controlled props query/body...

EUVD-2026-36418

Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 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, the /nuxtisland/ endpoint accepts attacker-controlled props query/body...

CVE-2026-46342 Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling shared-cache poisoning

Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 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, the /nuxtisland/ endpoint accepts attacker-controlled props query/body...

CVE-2026-46342 Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling shared-cache poisoning

Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 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, the /nuxtisland/ endpoint accepts attacker-controlled props query/body...

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,...

Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling shared-cache poisoning

Summary The /nuxtisland/ endpoint accepts attacker-controlled props query/body parameters and renders any island component without verifying that the URL-resident hash .json was actually issued for those inputs by . The hash is computed and embedded client-side but never validated server-side, so...