CVE-2026-64644
Published:July 27, 2026
Updated:August 04, 2026
Next.js is a React framework for building full-stack web applications. In versions 15.5.0 through 15.5.20 and 16.0.0 through 16.2.10, when self-hosting Next.js with the default image loader, the Image Optimization API can optimize remotely hosted images if configured (not enabled by default). If those images contain malicious content, they can cause CPU exhaustion in /_next/image endpoints.Only config.images.remotePatterns is affected, and just the patterns in that array, whereas config.images.unoptimized: true, config.images.loader: 'custom', and Vercel are not impacted. This issue has been fixed in versions 15.5.21 and 16.2.11.
Affected Packages
https://github.com/vercel/next.js.git (GITHUB):
Affected version(s) >=v16.0.0 <v16.2.11Fix Suggestion:
Update to version v16.2.11https://github.com/vercel/next.js.git (GITHUB):
Affected version(s) >=v15.5.0 <v15.5.21Fix Suggestion:
Update to version v15.5.21next (NPM):
Affected version(s) >=15.5.0 <15.5.21Fix Suggestion:
Update to version 15.5.21next (NPM):
Affected version(s) >=16.0.0 <16.2.11Fix Suggestion:
Update to version 16.2.11Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Inefficient Algorithmic Complexity
EPSS
Base Score:
0.68