CVE-2026-71315 Nuxt route rules silently dropped for mixed-case paths, bypassing appMiddleware auth gates (incomplete fix for CVE-2026-53721)
Attackers can bypass authentication middleware by using mixed-case paths when case sensitivity is disabled, allowing unauthorized access to protected routes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-71315?
CVE-2026-71315 is a high-severity authentication bypass vulnerability in nuxt, published on 5 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-71315?
4 open source packages ship an affected version, including nuxt.
| Package | Affected | Fixed in |
|---|---|---|
nuxt npm | From 3.21.7 | 3.21.10 |
nuxt npm | From 3.21.7 | 3.21.10 |
nuxt npm | From 4.4.7 | 4.5.1 |
nuxt npm | From 4.4.7 | 4.5.1 |
How do I fix CVE-2026-71315?
Upgrade nuxt to a fixed version for your release line: 3.21.10 or 4.5.1.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-71315 being exploited?
There is no known exploitation of CVE-2026-71315 in the wild and no public exploit code.
Sources
Also known as GHSA-hxvh-4h3w-prp9.