5.8.1
⚠️ Security Release
Fixes "Missing End Anchor in "subtypeNameReg" Allows Malformed Content-Types to Pass Validation": https://github.com/fastify/fastify/security/advisories/GHSA-573f-x89g-hqp9.
CVE-2026-3419
Full Changelog: https://github.com/fastify/fastify/compare/v5.8.0...v5.8.1