Nuxt: Route rules are matched against the raw request path, so a percent-encoded segment can bypass `appMiddleware` on dynamic and catch-all routes

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-114131
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-21 18:17:25 UTC
Updated2026-10-21 18:17:25 UTC
DescriptionNuxt is an open-source web development framework for Vue.js. From 3.11.0 until 3.21.4 and 4.4.4, Nuxt compares route-rule keys with the raw request path while route resolution decodes dynamic and catch-all parameters, allowing a percent-encoded segment to resolve to a protected page without matching the routeRules entry intended for that path. As a result, appMiddleware can be skipped during server rendering and an unauthenticated requester can receive the gated page and its SSR data. The same mismatch affects app-manifest rules including redirect, appLayout, ssr, prerender, and payload flags derived from cache, isr, and swr. This vulnerability is fixed in 4.4.4 and 3.21.4.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

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

Problem Types: CWE-436 | CWE-863 | CWE-436 CWE-436: Interpretation Conflict | CWE-863 CWE-863: Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nuxt Nuxt affected >= 4.0.0, < 4.4.4 Not specified
CNA Nuxt Nuxt affected >= 3.11.0, < 3.21.4 Not specified

References

ReferenceSourceLinkTags
github.com/nuxt/nuxt/releases/tag/v4.5.2 [email protected] github.com
github.com/nuxt/nuxt/commit/9123ed850c468a7424a868c20d0d49a5507d32e5 [email protected] github.com
github.com/nuxt/nuxt/security/advisories/GHSA-6gq8-jgmh-3ffp [email protected] github.com
github.com/nuxt/nuxt/releases/tag/v3.21.11 [email protected] github.com
github.com/nuxt/nuxt/commit/81f86ac5ee82bb1a9b887e59f3bc84624d711497 [email protected] github.com
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