4.8
MediumCVSS 3.1 · from GitHub_M
CVE-2026-119201
Nuxt dev server exposes generated appSecret through Vite file serving
nuxt · CWE-552 · CWE-552Affectednuxt
FixNo fix listed yet.
PublishedOct 29, 20:21 · GitHub_M
ScoredOct 29 · 4.8 · GitHub_M
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:05 UTC
What we know
No known exploitation. CISA KEV, checked 22:05 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
It only works under certain conditions, which makes it harder to pull off. CVSS: high attack complexity.
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.
From GitHub_M
Affected and fixed versions
ProductAffectedFixed innuxt>= 4.6.0, < 4.6.3–
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known