WS-2023-0303

CSS injection using component islands and useHead in GitHub repository nuxt/nuxt prior to 3.7.0...

XSS in user supplied title

Issue The useHead function does not sanitize tags inserted in each property, including the title property. Context The useHead repository is a wrapper around vueuse/head which wraps unjs/unhead which wraps harlan-zw/zhead. The possibility of XSS is not described as being a vulnerability in the ro...

CSS injection using component islands and useHead

Description After a component island render, the resulting head is regex'd for tags. This regex is not very robust and can be tricked, allowing for CSS injection. Proof of Concept app.vue vue Nuxt 3 Playground const title = ref nuxt.config.ts ts export default defineNuxtConfig experimental:...