CVE-2025-66456
Gravedad CVSS v4.0:
CRÍTICA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
09/12/2025
Última modificación:
12/12/2025
Descripción
*** Pendiente de traducción *** 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.
Impacto
Puntuación base 4.0
9.10
Gravedad 4.0
CRÍTICA
Referencias a soluciones, herramientas e información
- 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