CVE-2026-94543

A flaw was found in Next.js. In self-hosted applications using the Pages Router with static generation or Incremental Static Regeneration (ISR), response cache entries are not sufficiently bound to their source route. A remote attacker can exploit this issue by sending crafted requests to replace a page's cache entry with content from a different route. This results in response cache poisoning, causing the application to serve incorrect content to subsequent visitors.