What is CVE-2026-119201?

CVE-2026-119201 is a medium-severity vulnerability in Nuxt, classified under Files or Directories Accessible to External Parties. CVSS score: 4.8/10. Published 2026-10-29.

How severe is CVE-2026-119201?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Nuxt

CVE-2026-119201

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.

Published 2026-10-29.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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 >= 4.6.0, < 4.6.3

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

References

Frequently asked questions

What is CVE-2026-119201?: CVE-2026-119201 is a medium-severity vulnerability in Nuxt, classified under Files or Directories Accessible to External Parties. CVSS score: 4.8/10. Published 2026-10-29.
How severe is CVE-2026-119201?: Medium severity. CVSS v3 base score is 4.8 out of 10.