[ 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
- elysia npmAffected < 1.4.29 · fixed in 1.4.29 · GHSA-9643-4qgh-g8mx
[ References ]References
- github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mxx_refsource_CONFIRM
- github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab59329x_refsource_MISC
- gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9x_refsource_MISC
- github.com/elysiajs/elysia/releases/tag/1.4.29x_refsource_MISC