Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/nuxt/nuxt/commit/12b58f9d8768682611c3ad4ea4d403875129dbca
- https://github.com/nuxt/nuxt/releases/tag/v4.6.3
- https://github.com/nuxt/nuxt/security/advisories/GHSA-648h-gw55-m2g7
FAQ
What is CVE-2026-119199?
CVE-2026-119199 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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...
How severe is CVE-2026-119199?
CVE-2026-119199 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-119199?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.