CVE-2026-64644

Description

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.

References

https://github.com/vercel/next.js/security/advisories/GHSA-q8wf-6r8g-63ch

https://github.com/vercel/next.js/releases/tag/v16.2.11

https://github.com/vercel/next.js/releases/tag/v15.5.21

https://github.com/vercel/next.js/pull/96006

https://github.com/vercel/next.js/commit/93cb90891402fa4c47798d03cb9e05c13233766c

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS