CVE-2026-71314 Nuxt: Unauthenticated out-of-memory crash via unbounded v-for expansion in island rendering
An unauthenticated attacker can crash the Nuxt server by triggering unbounded memory allocation via server island v-for props.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-71314?
CVE-2026-71314 is a high-severity denial of service 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 3.1.0 until 3.21.10 and 4.5.1, an unauthenticated attacker can use a server island v-for prop, including vforToArray and , to trigger unbounded SSR memory allocation until MAX_VFOR_LENGTH = 100000 and crash the Nuxt process. This issue is fixed in 3.21.10 and 4.5.1.
Which versions are affected by CVE-2026-71314?
4 open source packages ship an affected version, including nuxt.
| Package | Affected | Fixed in |
|---|---|---|
nuxt npm | From 3.1.0 | 3.21.10 |
nuxt npm | From 3.1.0 | 3.21.10 |
nuxt npm | From 4.0.0 | 4.5.1 |
nuxt npm | From 4.0.0 | 4.5.1 |
How do I fix CVE-2026-71314?
Upgrade nuxt to a fixed version for your release line: 3.21.10 or 4.5.1.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-71314 being exploited?
There is no known exploitation of CVE-2026-71314 in the wild and no public exploit code.
Sources
Also known as GHSA-hxcr-hm88-mpq6.