CVE-2026-56669

Elysia: Inefficient Algorithmic Complexity and Interpretation Conflict

State: Published
Severity: 7.5 High
Published: Jul 8, 2026
Updated: Jul 10, 2026
Reserved: Jun 22, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-407 Inefficient Algorithmic Complexity
CWE-436 Interpretation Conflict

Affected Products

Product	Versions
elysiaelysiajs	< 1.4.29Affected

References

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