CVE-2026-112712 | Fastify fastify-middie up to 9.3.5 Middleware Mounting use improper authorization

October 20, 2026 Yanac

A vulnerability has been found in Fastify fastify-middie up to 9.3.5 and classified as critical. Affected by this vulnerability is the function use of the component Middleware Mounting. Performing a manipulation results in improper authorization.

This vulnerability is reported as CVE-2026-112712. The attack is possible to be carried out remotely. No exploit exists.

The affected component should be upgraded.VulDB Recent EntriesRead More