CVE-2026-56669
HIGHElysia: Inefficient Algorithmic Complexity and Interpretation Conflict
Title source: cnaDescription
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.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mx
X_Refsource_Misc x_refsource_misc
https://github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab59329
X_Refsource_Misc x_refsource_misc
https://gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9
X_Refsource_Misc x_refsource_misc
https://github.com/elysiajs/elysia/releases/tag/1.4.29
Scores
CVSS v3
7.5
EPSS
0.0036
EPSS Percentile
28.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-407
CWE-436
Status
published
Products (1)
elysiajs/elysia
< 1.4.29
Published
Jul 08, 2026
Tracked Since
Jul 09, 2026