CVE-2026-119199 Nuxt dev server exposes private runtime config through the Nitro dev bundle
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-119199?
CVE-2026-119199 is a medium-severity vulnerability in nuxt, published on 29 Oct 2026.
Official description
Nuxt is an open-source web development framework for Vue.js. From 3.0.0 until 4.6.3, the Nuxt development server can expose the Nitro 2 development bundle at <buildDir>/dev/index.mjs through Vite file serving when the server is reachable over HTTP. Nitro inlines private runtimeConfig values resolved at build time into that bundle, including secrets configured in nuxt.config, and Nuxt 4.6.0 and later also inline the generated development appSecret. The default localhost binding limits remote exposure, production builds and Nitro 3 are not affected, and runtime configuration supplied only through NUXT_* environment variables at server startup is not inlined. This issue is fixed in version 4.6.3.
Which versions are affected by CVE-2026-119199?
How do I fix CVE-2026-119199?
No fix has been published for CVE-2026-119199 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-119199 being exploited?
There is no known exploitation of CVE-2026-119199 in the wild and no public exploit code.