GHSA-hhf6-3xpg-pggx

web3-core-subscriptions has a Prototype Pollution vulnerability

Source: GitHub Advisory Database (reviewed) Low CVE-2025-57330

Packages

Ecosystem	Package	Affected	Fixed in
npm	web3-core-subscriptions	<= 2.0.0-alpha.1	no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

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

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2025-57330 advisory
https://github.com/web3/web3.js/commit/d9660426c12210c5071aeb4e1a647c6ea9d67b12 web
https://github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/web3-core-subscriptions%401.10.4/index.js web
https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57330 web
https://github.com/web3/web3.js package