CVE-2026-46342
Fixed upstream EPSS <1%CVSS 2.3
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 /__nuxt_island/* endpoint accepts attacker-controlled props query/body parameters and renders any island component without verifying that the URL-resident hash (<Name>_<hashId>.json) was actually issued for those inputs by <NuxtIsland>. The hash is computed and embedded client-side but never validated server-side, so the same path can return materially different responses depending on the query. This issue has been patched in versions 3.21.6 and 4.4.6.
Products: nuxt
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| npm | @nuxt/nitro-server | 3.21.6 |
| npm | @nuxt/nitro-server | 4.4.6 |
| npm | nuxt | 3.21.6 |
| npm | nuxt | 4.4.6 |