CVE-2025-57752 Next.js Affected by Cache Key Confusion for Image Optimization API Routes
Attackers can access unauthorized cached image responses from API routes if image optimization is enabled and responses vary by request headers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-57752?
CVE-2025-57752 is a medium-severity vulnerability in Vercel Next.js, published on 29 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Next.js is a React framework for building full-stack web applications. In versions before 14.2.31 and from 15.0.0 to before 15.4.5, Next.js Image Optimization API routes are affected by cache key confusion. When images returned from API routes vary based on request headers (such as Cookie or Authorization), these responses could be incorrectly cached and served to unauthorized users due to a cache key confusion bug. This vulnerability has been fixed in Next.js versions 14.2.31 and 15.4.5. All users are encouraged to upgrade if they use API routes to serve images that depend on request headers and have image optimization enabled.
Weakness: CWE-524
Which versions are affected by CVE-2025-57752?
4 open source packages ship an affected version, including next. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
next npm | From 0.9.9 | 14.2.31 |
next npm | From 0.9.9 | 14.2.31 |
next npm | From 15.0.0 | 15.4.5 |
next npm | From 15.0.0 | 15.4.5 |
Products include Vercel Next.js.
How do I fix CVE-2025-57752?
Upgrade next to a fixed version for your release line: 14.2.31 or 15.4.5.
Is CVE-2025-57752 being exploited?
There is no known exploitation of CVE-2025-57752 in the wild and no public exploit code.
Other vulnerabilities in Vercel Next.js
- CVE-2025-29927 Authorization Bypass in Next.js Middleware
- CVE-2026-44578 Next.js: Server-side request forgery in applications using WebSocket upgrades
- CVE-2026-94483 Next.js: Server-Side Request Forgery in Image Optimization
- CVE-2026-64642 Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale
- CVE-2026-64645 Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname
Sources
Also known as GHSA-g5qg-72qw-gw5v, MINI-6f28-m59g-77q8, ROOT-APP-NPM-CVE-2025-57752.