CVE-2026-84428

fastify versions before 5.12.2 implement the case-insensitive nature of HTTP header names by lowercasing names in a route's header schema before compiling it, but the transformation is incomplete: it lowercases the properties keys and the root-level required array, and does not lowercase the...

PT-2026-85472

Name of the Vulnerable Software and Affected Versions fastify versions prior to 5.12.2 Description An issue exists in how HTTP header names are handled during the compilation of a route's header schema. The software attempts to implement the case-insensitive nature of HTTP headers by lowercasing...