High severity · published Aug 5, 2026
CVE-2026-71315
Nuxt route rules silently dropped for mixed-case paths, bypassing appMiddleware auth gates (incomplete fix for CVE-2026-53721)
8.2
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NU
nuxt · nuxt
>= 4.4.7, < 4.5.1; >= 3.21.7, < 3.21.10 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-71315
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-71315
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
github.com
https://github.com/nuxt/nuxt/security/advisories/GHSA-hxvh-4h3w-prp9
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