CVE-2026-119201 Nuxt dev server exposes generated appSecret through Vite file serving
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-119201?
CVE-2026-119201 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 4.6.0 until 4.6.3, nuxt dev stores a generated appSecret in <buildDir>/app-secret, by default .nuxt/app-secret, within a directory allowed by Vite's server.fs configuration. A client with direct HTTP access to an exposed development server can fetch the file, use deriveSecret() to compute derived secrets such as the default useSession password, and forge session cookies accepted by that development server. The default localhost binding limits remote exposure, cross-origin browser reads are blocked, production builds and development servers with an explicitly configured appSecret are not affected. This issue is fixed in version 4.6.3.
Weakness: CWE-552
Which versions are affected by CVE-2026-119201?
How do I fix CVE-2026-119201?
No fix has been published for CVE-2026-119201 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-119201 being exploited?
There is no known exploitation of CVE-2026-119201 in the wild and no public exploit code.