CVE-2026-56669

Elysia (a TypeScript framework for request validation, type inference, OpenAPI docs, and client-server communication) contains a vulnerability (CVE-2026-56669) caused by using getAll in form data normalization for multipart/form-data endpoints prior to 1.4.29. This leads to quadratic growth in wo...

Elysia vulnerable to prototype pollution with multiple standalone schema validation

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...

elysia-cors Origin Validation Error

An Origin Validation Error in the elysia-cors library thru 1.3.0 allows attackers to bypass Cross-Origin Resource Sharing CORS restrictions. The library incorrectly validates the supplied origin by checking if it is a substring of any domain in the site's CORS policy, rather than performing an...