{"id":"CVE-2026-114133","sourceIdentifier":"security-advisories@github.com","published":"2026-10-21T18:17:26.260","lastModified":"2026-10-22T16:46:48.920","vulnStatus":"Awaiting Analysis","cveTags":[],"descriptions":[{"lang":"en","value":"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 ."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"nuxt","product":"nuxt","versions":[{"version":">= 3.13.0, < 4.6.2","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.3,"impactScore":2.7}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-79"}]}],"references":[{"url":"https://github.com/nuxt/nuxt/commit/493565e99451a0f52330b1f6b979254a4a39e5d0","source":"security-advisories@github.com"},{"url":"https://github.com/nuxt/nuxt/releases/tag/v4.6.2","source":"security-advisories@github.com"},{"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-xfq5-w38q-pc2x","source":"security-advisories@github.com"}]}