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High · 7.5 CVE-2025-57330 EUVD-2025-31064GHSA-hhf6-3xpg-pggx

web3-core-subscriptions has a Prototype Pollution vulnerability

Published Sep 24, 2025 · Updated Sep 29, 2025 · Assigned by mitre

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.

Affected packages

EcosystemPackageAffectedFixedRecord
npm web3-core-subscriptions <= 2.0.0-alpha.1 — GHSA-hhf6-3xpg-pggx

References