@fastify/middie: Processing logic error vulnerability

The @fastify/middie version from 9.0.0 to 9.3.5 contains a processing logic vulnerability. This vulnerability arises from the use function, which may deviate from the path provided by the Fastify router when concatenating the mount path of the middleware with the plugin scope prefix. As a result,...

CVE-2026-22031

@fastify/middie is the plugin that adds middleware support on steroids to Fastify. A security vulnerability exists in @fastify/middie prior to version 9.1.0 where middleware registered with a specific path prefix can be bypassed using URL-encoded characters e.g., "/%61dmin" instead of "/admin"...