GHSA-2xp9-vwfh-vxw4 Next.js: Unauthenticated Remote Code Execution in Image Optimization API when AVIF files are used
Unauthenticated attackers can achieve remote code execution via the Next.js Image Optimization API by uploading malicious AVIF files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-2xp9-vwfh-vxw4?
GHSA-2xp9-vwfh-vxw4 is a code injection vulnerability in next, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the underlying libheif library used by sharp which Next.js uses for image optimization can lead to remote code execution when AVIF files are optimized.
Until a fix has propagated, optimization of AVIF files is disabled.
Which versions are affected by GHSA-2xp9-vwfh-vxw4?
4 open source packages ship an affected version, including next.
| Package | Affected | Fixed in |
|---|---|---|
next npm | From 10.0.0 | 15.5.24 |
next npm | From 10.0.0 | 15.5.24 |
next npm | From 16.0.0 | 16.3.3 |
next npm | From 16.0.0 | 16.3.3 |
How do I fix GHSA-2xp9-vwfh-vxw4?
Upgrade next to a fixed version for your release line: 15.5.24 or 16.3.3.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is GHSA-2xp9-vwfh-vxw4 being exploited?
There is no known exploitation of GHSA-2xp9-vwfh-vxw4 in the wild and no public exploit code.