CVE-2026-53721highCWE-178CWE-863

CVE-2026-53721: high-severity vulnerability in nuxt

Nuxt: Route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher

Published · Updated

Follow this CVE+ Monitor nuxt+ Monitor nuxt

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.8epss 0.4%
Nuxt is an open-source web development framework for Vue.js. From versions 3.11.0 to before 3.21.7 and 4.0.0 to before 4.4.7, there is a route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher. This issue has been patched in versions 3.21.7 and 4.4.7.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products
nuxt · nuxt
Related CVEs — nuxt

In the same product, most dangerous first.

CVE-2024-23657HIGHPath Traversal: '../filedir' in Nuxt DevtoolsEPSS 1.2%CVE-2026-71314HIGHNuxt: Unauthenticated out-of-memory crash via unbounded v-for expansion in island renderingEPSS 0.9%CVE-2024-34344HIGHRemote code execution via the browser when running the test locally in nuxtEPSS 0.8%CVE-2026-71321HIGHNuxt: Unauthenticated CPU exhaustion parsing and hashing the Nuxt island endpoint body before hash validationEPSS 0.7%CVE-2026-71320HIGHNuxt: Server-Side Remote Code Execution via Runtime Template Injection in Nuxt Server Island PropsEPSS 0.7%CVE-2025-24360MEDIUMOpening a malicious website while running a Nuxt dev server could allow read-only access to codeEPSS 0.6%