[ CVE-2026-56669 · Published 8 Jul 2026 ]

elysia has Inefficient Algorithmic Complexity and Interpretation Conflict

CVSS 7.5 EPSS <1%Fix available

[ Description ]Official description

Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and client-server communication. Prior to 1.4.29, Elysia uses getAll in form data normalization for multipart/form-data endpoints, causing the amount of work to grow quadratically with the number of unique key-value pairs and allowing CPU exhaustion. This issue is fixed in version 1.4.29.

[ Fixes ]Fixes and patches

  • elysia 1.4.29Fixed version · GitHub Advisories · npm package elysia: upgrade to 1.4.29 or later (affected < 1.4.29)

[ Packages ]Affected open-source packages