AIKIDO-2026-262339
next is vulnerable to Server-Side Request Forgery (SSRF)
83
High Risk
This Affects:
nextTL;DR
The next Image Optimization API fetches remote images when images.remotePatterns allows the host. Before connecting, it resolves the hostname and rejects private addresses, then fetches the URL with a second DNS lookup. A hostname whose DNS record changes after that check can make the server request a private address and return the response. The fix pins the connection to the addresses that were already checked.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and your application configures images.remotePatterns.
Background info
next is vulnerable to Server-Side Request Forgery (SSRF) in versions 16.0.0 - 16.3.7.
How to fix this
Upgrade the next library to the patch version.
Links
GitHub Release
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