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CVE-2026-114131— Nuxt: Route rules are matched against the raw request path, so a percent-encoded segment can bypass `appMiddleware` on dynamic and catch-all routes

Quick assessment

Affected
nuxt nuxt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nuxt 是一个基于 Vue.js 的开源 Web 开发框架。在版本 3.11.0 至 3.21.4，以及 4.4.4 之前，Nuxt 在解析路由规则时，将规则键与未经解码的原始请求路径进行比对；而在解析动态路径和通配符参数时，却会对这些参数进行 URL 解码。这导致经过百分号编码（percent-encoded）的路径片段能够绕过 中为该路径配置的规则，从而匹配到受保护页面。其后果是，在服务端渲染过程中可能跳过 ，使未经验证的请求者能够获取受保护页面及其服务端渲染数据。同样的不匹配问题也影响了 中的规则，包括重定

CVSS 6.5 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
nuxt nuxt >= 4.0.0, < 4.4.4 affected
>= 3.11.0, < 3.21.4 affected
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I. Basic Information for CVE-2026-114131

Vulnerability Information
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Vulnerability Title
Nuxt: Route rules are matched against the raw request path, so a percent-encoded segment can bypass `appMiddleware` on dynamic and catch-all routes
Source: CVE Program / CVE List V5
Vulnerability Description
Nuxt 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
解释冲突
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nuxt nuxt >= 4.0.0, < 4.4.4 -

II. Public POCs for CVE-2026-114131

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III. Intelligence Information for CVE-2026-114131

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Patches & Fixes for CVE-2026-114131 (2)

Vendor Advisories for CVE-2026-114131 (1)

Same Patch Batch · nuxt · 2026-10-21 · 4 CVEs total

CVE-2026-114132 6.3 MEDIUM Nuxt: Server-side route rules (`redirect`, `headers`, `proxy`, `ssr`) are skipped for case
CVE-2026-114133 5.4 MEDIUM Nuxt server islands render `useHeadSafe` input without sanitisation
CVE-2026-114130 2.3 LOW Nuxt: Incomplete fix for GHSA-934w-87qh-qr26: a `javascript:` URL prefixed with an ASCII c

IV. Related Vulnerabilities

Same product: nuxt
Same vendor: nuxt
Same weakness: CWE-436

V. Comments for CVE-2026-114131

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