Description
mpregular is a package that provides a small program development framework based on RegularJS. A Prototype Pollution vulnerability in the mp.addEventHandler function of mpregular version 0.2.0 and before allows attackers to inject properties on Object.prototype via supplying a crafted payload, causing denial of service (DoS) as the minimum consequence.
References
github.com/...t/prototype-pollution/mpregular@0.2.0/index.js
github.com/.../JavaScript/prototype-pollution/CVE-2025-57323
