Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9
- https://github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab593
- https://github.com/elysiajs/elysia/releases/tag/1.4.29
- https://github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mx
FAQ
What is CVE-2026-56669?
CVE-2026-56669 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 mult...
How severe is CVE-2026-56669?
CVE-2026-56669 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56669?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.