جزئیات آسیب‌پذیری

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.

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