High 8.8Published Jun 12, 2026

CVE-2026-53721Nuxt: Route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher

Updated under an hour ago (Oct 28, 2026, 1:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 8.8 HIGH (v4.0, 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
Weakness (CWE): CWE-178, CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jun 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

nuxt nuxt nuxt:nuxt (from the name)	from 3.11.0, < 3.21.7; from 4.0.0, < 4.4.7	CNA record
nuxt nuxt nuxt:nuxt	from 3.11.0 before 3.21.7; from 4.0.0 before 4.4.7	NVD

References

References

https://github.com/nuxt/nuxt/security/advisories/GHSA-mm7m-92g8-7m47	x-refsource-confirm, mitigation, patch, vendor-advisory
https://github.com/nuxt/nuxt/commit/07e39cd6f26e407b4192b7865bd17bc44536b9bb	x-refsource-misc, patch
https://github.com/nuxt/nuxt/commit/3f3e3fa7b5eec8e495f4f8ce0a54813a8875a11e	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.