AI description
CVE-2026-53721 is an authentication bypass vulnerability affecting Nuxt.js, an open-source web development framework for Vue.js. This flaw impacts versions 3.11.0 through 3.21.6 and 4.0.0 through 4.4.6. The vulnerability stems from a case-sensitivity mismatch between `vue-router`, which resolves routes using case-insensitive path matching, and Nuxt's `routeRules` matcher, which performs case-sensitive comparisons. An unauthenticated, network-based attacker can exploit this by submitting an HTTP request with altered casing in a static segment of a protected URL. For example, requesting `/Admin/dashboard` instead of `/admin/dashboard` causes `vue-router` to match and render the route, while the `routeRules` lookup fails to find a corresponding rule. This bypasses route-rule middleware protections, leading to the server returning a fully server-side-rendered page without executing the intended middleware, potentially exposing protected content or restricted functionality.
- Description
- 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.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- nuxt
CVSS 4.0
- Type
- Secondary
- Base score
- 8.8
- Impact score
- -
- Exploitability score
- -
- Vector string
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- HIGH
CVSS 3.1
- Type
- Primary
- Base score
- 8.2
- Impact score
- 4.2
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- Severity
- HIGH
- security-advisories@github.com
- CWE-178
- Hype score
- Not currently trending
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