GHSA-9g9p-9gw9-jx7f Next.js self-hosted applications vulnerable to DoS via Image Optimizer remotePatterns configuration

• npm next: >= 10.0.0, < 15.5.10 → fixed in 15.5.10 • npm next: >= 15.6.0-canary.0, < 16.1.5 → fixed in 16.1.5

A DoS vulnerability exists in self-hosted Next.js applications that have `remotePatterns` configured for the Image Optimizer. The image optimization endpoint (`/_next/image`) loads external images entirely into memory without enforcing a maximum size limit, allowing an attacker to cause out-of-memory conditions by requesting optimization of arbitrarily large images. This vulnerability requires that `remotePatterns` is configured to allow image optimization from external domains and that the attacker can serve or control a large image on an allowed domain. Strongly consider upgrading to 15.5.10 and 16.1.5 to reduce risk and prevent availability issues in Next applications.