Nuxt dev server exposes private runtime config through the Nitro dev bundle

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-119199
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-29 21:17:18 UTC
Updated2026-10-29 21:17:18 UTC
DescriptionNuxt 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.

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-200 | CWE-538 | CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor | CWE-538 CWE-538: Insertion of Sensitive Information into Externally-Accessible File or Directory

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nuxt Nuxt affected >= 3.0.0, < 4.6.3 Not specified

References

ReferenceSourceLinkTags
github.com/nuxt/nuxt/releases/tag/v4.6.3 [email protected] github.com
github.com/nuxt/nuxt/commit/12b58f9d8768682611c3ad4ea4d403875129dbca [email protected] github.com
github.com/nuxt/nuxt/security/advisories/GHSA-648h-gw55-m2g7 [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
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