# CVE-2026-71315

## Summary

- **CVE ID:** CVE-2026-71315
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N)
- **CWE:** CWE-178, CWE-863
- **Published:** Aug 5, 2026
- **Last Modified:** Aug 6, 2026

## 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.

## Affected Products

- nuxt — nuxt (>= 4.4.7, < 4.5.1)
- nuxt — nuxt (>= 3.21.7, < 3.21.10)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.27%
- **EPSS Percentile:** 18.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._