{"id":"CVE-2026-114133","published":"2026-10-21T18:17:26.260","lastModified":"2026-10-22T16:46:48.920","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 .","cvssScore":5.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://github.com/nuxt/nuxt/commit/493565e99451a0f52330b1f6b979254a4a39e5d0","tags":[]},{"url":"https://github.com/nuxt/nuxt/releases/tag/v4.6.2","tags":[]},{"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-xfq5-w38q-pc2x","tags":[]}],"exploitRefs":[{"url":"https://github.com/nuxt/nuxt/commit/493565e99451a0f52330b1f6b979254a4a39e5d0","tags":[]},{"url":"https://github.com/nuxt/nuxt/releases/tag/v4.6.2","tags":[]},{"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-xfq5-w38q-pc2x","tags":[]}],"hasPoc":true,"ai":null}