---
id: GHSA-2xp9-vwfh-vxw4
title: >-
  Next.js: Unauthenticated Remote Code Execution in Image Optimization API when
  AVIF files are used
summary: >-
  Next.js: Unauthenticated Remote Code Execution in Image Optimization API when
  AVIF files are used
severity: critical
cwe:
  - CWE-1395
vendor: next
product: next
ecosystem: npm
affected:
  - 'next >= 10.0.0, < 15.5.24'
  - 'next >= 16.0.0, < 16.3.3'
patched:
  - next 15.5.24
  - next 16.3.3
published: '2026-09-08'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T21:21:13Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-2xp9-vwfh-vxw4'
references:
  - url: >-
      https://github.com/strukturag/libheif/security/advisories/GHSA-g89c-p67h-r497
  - url: 'https://github.com/vercel/next.js/security/advisories/GHSA-2xp9-vwfh-vxw4'
  - url: 'https://github.com/vercel/next.js/pull/97875'
  - url: 'https://github.com/vercel/next.js/pull/97931'
  - url: >-
      https://github.com/vercel/next.js/commit/3a15b4ac6ac8e70b1a9b18ecc18e8434462899b3
  - url: >-
      https://github.com/vercel/next.js/commit/409772ec807def20132d251ad48fd8d8ad4c73c2
  - url: >-
      https://github.com/vercel/next.js/commit/7a5937a8ab20b89d0a961f75eabb11577f5d5998
  - url: 'https://github.com/vercel/next.js/releases/tag/v15.5.24'
  - url: 'https://github.com/vercel/next.js/releases/tag/v16.3.3'
  - url: 'https://github.com/advisories/GHSA-2xp9-vwfh-vxw4'
tags:
  - ghsa
  - npm
ingestedAt: '2026-09-08T22:12:30.968Z'
---

## Overview

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.

## Affected packages

- `next >= 10.0.0, < 15.5.24`
- `next >= 16.0.0, < 16.3.3`

## Remediation

Upgrade to a patched release:

- `next 15.5.24`
- `next 16.3.3`