CVE-2026-53721 | Nuxt is an open-source web development framework for Vue.js.… | CVSS 8.8 HIGH

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.

Metadata

CVE ID: CVE-2026-53721
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-10 16:43 UTC
Published: 2026-06-12 13:41 UTC
Last updated: 2026-06-13 02:59 UTC
Primary CWE: CWE-178
CWE-178: Improper Handling of Case Sensitivity
Vendor / Product: nuxt / nuxt
Sources: cve.org · NVD

Severity & Metrics

8.8 HIGH CVSS 4.0

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
nuxt	nuxt	—	>= 3.11.0, < 3.21.7, >= 4.0.0, < 4.4.7

Weakness (CWE)

CWE	Source	Description
CWE-178	cna	CWE-178: Improper Handling of Case Sensitivity
CWE-863	cna	CWE-863: Incorrect Authorization

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.8	HIGH	4.0	cna	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

References (3)

https://github.com/nuxt/nuxt/security/advisories/GHSA-mm7m-92g8-7m47 https://github.com/nuxt/nuxt/security/advisories/GHSA-mm7m-92g8-7m47
https://github.com/nuxt/nuxt/commit/07e39cd6f26e407b4192b7865bd17bc44536b9bb https://github.com/nuxt/nuxt/commit/07e39cd6f26e407b4192b7865bd17bc44536b9bb
https://github.com/nuxt/nuxt/commit/3f3e3fa7b5eec8e495f4f8ce0a54813a8875a11e https://github.com/nuxt/nuxt/commit/3f3e3fa7b5eec8e495f4f8ce0a54813a8875a11e