CVE-2026-53721CWE-178CWE-863

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

High · published June 12, 2026

CVSS v4.0
8.8
EPSS
1%
Percentile
42.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.8 · HIGH
Vector
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
EPSS
0.00512 · 42.8th percentile
Weaknesses
CWE-178 · Improper Handling of Case Sensitivity; CWE-863 · Incorrect Authorization
Published
2026-06-12T13:41Z
EPSS history
Timeline
  • 12 JUN 13:41Z
    Nuxt: Route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher
    cvelistv5