What is CVE-2026-119199?

CVE-2026-119199 is a medium-severity vulnerability in Nuxt, classified under Information Disclosure. CVSS score: 5.9/10. Published 2026-10-29.

How severe is CVE-2026-119199?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Information disclosure in Nuxt

CVE-2026-119199

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.

Vulnerability class: Information Disclosure

Published 2026-10-29.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Nuxt — versions >= 3.0.0, < 4.6.3

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-119199?: CVE-2026-119199 is a medium-severity vulnerability in Nuxt, classified under Information Disclosure. CVSS score: 5.9/10. Published 2026-10-29.
How severe is CVE-2026-119199?: Medium severity. CVSS v3 base score is 5.9 out of 10.