CVE-2026-56669 | THREATINT

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.

PUBLISHED Reserved 2026-06-22 | Published 2026-07-08 | Updated 2026-07-10 | Assigner GitHub_M

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-407: Inefficient Algorithmic Complexity

CWE-436: Interpretation Conflict

Product status

< 1.4.29

affected

References

github.com/...elysia/security/advisories/GHSA-9643-4qgh-g8mx

github.com/...ommit/8358ff9efbcedf9534995f5977f26b9ceab59329

gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9

github.com/elysiajs/elysia/releases/tag/1.4.29

cve.org (CVE-2026-56669)

nvd.nist.gov (CVE-2026-56669)

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