CVE-2026-71320 Nuxt: Server-Side Remote Code Execution via Runtime Template Injection in Nuxt Server Island Props
Attackers can execute arbitrary code on the server by injecting templates into Nuxt Server Island props when the runtime compiler is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-71320?
CVE-2026-71320 is a high-severity code injection 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 3.4.0 until 3.21.10 and 4.5.1, an attacker can inject a template key through /__nuxt_island/ props into a dynamic component when `vue.runtimeCompiler: true` is enabled, causing template execution in the Nitro process. This issue is fixed in 3.21.10 and 4.5.1.
Which versions are affected by CVE-2026-71320?
4 open source packages ship an affected version, including nuxt.
| Package | Affected | Fixed in |
|---|---|---|
nuxt npm | From 3.4.0 | 3.21.10 |
nuxt npm | From 3.4.0 | 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-2026-71320?
Upgrade nuxt to a fixed version for your release line: 3.21.10 or 4.5.1.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-71320 being exploited?
There is no known exploitation of CVE-2026-71320 in the wild and no public exploit code.
Sources
Also known as GHSA-9473-5f9j-94wq.