Description
The web3-core-subscriptions is a package designed to manages web3 subscriptions. A Prototype Pollution vulnerability in the attachToObject function of web3-core-subscriptions version 1.10.4 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/...lution/web3-core-subscriptions@1.10.4/index.js
github.com/.../JavaScript/prototype-pollution/CVE-2025-57330
