Nuxt server islands render `useHeadSafe` input without sanitisation

[ Description ]Official description

Nuxt is an open-source web development framework for Vue.js. From 3.13.0 until 4.6.2, the server-island renderer serializes raw useHeadSafe entry input into the island response without preserving the safe-input marker, and NuxtIsland later inserts that input into the page head as an ordinary entry. An application that passes attacker-controlled data to useHeadSafe in a .server.vue component or page, or in a component rendered through NuxtIsland, can therefore render values normally removed by the allowlist, including event-handler attributes or executable script content, resulting in stored cross-site scripting in the application origin. This issue is fixed in version 4.6.2 .

[ Fixes ]Fixes and patches

• nuxt 4.6.2Fixed version · GitHub Advisories · npm package nuxt: upgrade to 4.6.2 or later (affected >= 3.13.0, < 4.6.2)

[ Packages ]Affected open-source packages

• nuxt npmAffected >= 3.13.0, < 4.6.2 · fixed in 4.6.2 · GHSA-xfq5-w38q-pc2x

[ References ]References

• github.com/nuxt/nuxt/commit/493565e99451a0f52330b1f6b979254a4a39e5d0
• github.com/nuxt/nuxt/releases/tag/v4.6.2
• github.com/nuxt/nuxt/security/advisories/GHSA-xfq5-w38q-pc2x