CVE-2026-56669: high-severity vulnerability in elysiajs elysia
Elysia: Inefficient Algorithmic Complexity and Interpretation Conflict
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
elysiajs · elysiaRelated CVEs — elysiajs elysia
In the same product, most dangerous first.
CVE-2025-66457HIGHElysia affected by arbitrary code injection through cookie configEPSS 0.9%CVE-2025-66456CRITICALElysia vulnerable to prototype pollution with multiple standalone schema validationEPSS 0.6%CVE-2026-30837HIGHElysia has a string URL format redosEPSS 0.5%CVE-2026-31865MEDIUMElysia Cookie Value Prototype PollutionEPSS 0.2%