CVE-2026-84428 | Fastify up to 5.12.1 Header Schema Compilation input validation (EUVD-2026-70998)

September 4, 2026 Yanac

A vulnerability was found in Fastify up to 5.12.1. It has been declared as problematic. Affected by this issue is some unknown functionality of the component Header Schema Compilation. Executing a manipulation can lead to improper input validation.

This vulnerability is registered as CVE-2026-84428. It is possible to launch the attack remotely. No exploit is available.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More