CVE-2026-71318 Nuxt: Unauthorized Component Instantiation via Server Island Props
Attackers can execute arbitrary code by injecting malicious props into Nuxt server island endpoints, requiring an upgrade to patched versions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-71318?
CVE-2026-71318 is a medium-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 3.1.0 until 3.21.10 and 4.5.1, an attacker can supply a top-level `as` prop to the /__nuxt_island/ endpoint and drive dynamic component resolution through <component :is>, resolveDynamicComponent, or h(). This issue is fixed in 3.21.10 and 4.5.1.
Weakness: CWE-20
Which versions are affected by CVE-2026-71318?
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-2026-71318?
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-2026-71318 being exploited?
There is no known exploitation of CVE-2026-71318 in the wild and no public exploit code.
Sources
Also known as GHSA-48hr-524c-v5w3.