CVE-2026-71315

HIGH 8.2

Nuxt route rules silently dropped for mixed-case paths, bypassing appMiddleware auth gates (incomplete fix for CVE-2026-53721)

CVSS Score

8.2

EPSS Score

0.0%

EPSS Percentile

0th

Nuxt is an open-source web development framework for Vue.js. From 3.21.7 until 3.21.10 and 4.5.1, mixed-case routeRules keys can fail to match case-folded lookups when router.options.sensitive is false and drop appMiddleware authorization gates. This is caused by an incomplete fix for CVE-2026-53721. This issue is fixed in 3.21.10 and 4.5.1.

CWE	CWE-178 CWE-863
Vendor	nuxt
Product	nuxt
Published	Aug 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

nuxt / nuxt

>= 4.4.7, < 4.5.1 >= 3.21.7, < 3.21.10

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/nuxt/nuxt/security/advisories/GHSA-hxvh-4h3w-prp9 github.com: https://github.com/nuxt/nuxt/commit/619963309e082190bac4a26b05f2dd155b039b81 github.com: https://github.com/nuxt/nuxt/commit/ad624a75ad2d215f43633f6b40be346a7194d34d github.com: https://github.com/nuxt/nuxt/releases/tag/v3.21.10 github.com: https://github.com/nuxt/nuxt/releases/tag/v4.5.1