CVE-2025-66456 | Teknoloji dünyasından en güncel haberleri ve güvenlikle ilgili gelişmeleri takip edin.

Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation and client-server communication. Versions 1.4.0 through 1.4.16 co…
Critical CVSS: 9.1

CVE-2025-66456

Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation and client-server communication. Versions 1.4.0 through 1.4.16 contain a prototype pollution vulnerability in `mergeDeep` after merging results of two standard schema validations with the same key. Due to the ordering of merging, there must be an any type that is set as a standalone guard, to allow for the `__proto__ prop` to be merged. When combined with GHSA-8vch-m3f4-q8jf this allows for a full RCE by an attacker. This issue is fixed in version 1.4.17. To workaround, remove the `__proto__ key` from body.
Vendor
Elysiajs
Product
Elysia
CWE
CWE-1321
Yayın Tarihi
2025-12-09 20:15:54
Güncelleme
2025-12-17 14:30:08
Source Identifier
security-advisories@github.com
KEV Date Added
-

Kategoriler

CWE-1321 Elysia CRITICAL Elysiajs 2025

Referanslar

https://github.com/elysiajs/elysia/commit/26935bf76ebc43b4a43d48b173fc853de43bb51e https://github.com/elysiajs/elysia/commit/3af978663e437dccc6c1a2a3aff4b74e1574849e https://github.com/elysiajs/elysia/pull/1564 https://github.com/elysiajs/elysia/security/advisories/GHSA-8vch-m3f4-q8jf https://github.com/elysiajs/elysia/security/advisories/GHSA-hxj9-33pp-j2cc https://github.com/elysiajs/elysia/security/advisories/GHSA-8vch-m3f4-q8jf https://github.com/elysiajs/elysia/security/advisories/GHSA-hxj9-33pp-j2cc