XSS in Image Optimization API for Next.js

Impact

• Affected: All of the following must be true to be affected
  • Next.js between version 10.0.0 and 11.1.0
  • The next.config.js file has images.domains array assigned
  • The image host assigned in images.domains allows user-provided SVG
• Not affected: The next.config.js file has images.loader assigned to something other than default
• Not affected: Deployments on Vercel are not affected

Patches

Next.js v11.1.1