Vulnerabilities in pkg:npm/web3-core-subscriptions

PACKAGE
Advisory Identifier: GHSA-hhf6-3xpg-pggx
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Advisory Summary

CVE-2025-57330 is a LOW web3-core-subscriptions has a prototype pollution vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Web3 core subscriptions libraries in the npm ecosystem. The issue involves web3-core-subscriptions has a prototype pollution vulnerability. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/web3-core-subscriptions

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/web3-core-subscriptions. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-hhf6-3xpg-pggx CVE-2025-57330 LOW web3-core-subscriptions has a Prototype Pollution vulnerability

CVE-2025-57330 at a Glance

CVE Identifier CVE-2025-57330
GHSA Identifier GHSA-hhf6-3xpg-pggx
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Web3 core subscriptions
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2025-57330

To remediate this vulnerability, upgrade all affected Web3 core subscriptions dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

web3-core-subscriptions fixed: Latest secure release 
npm install web3-core-subscriptions@Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls web3-core-subscriptions

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2025-57330, inspect your project dependencies using npm:

npm ls web3-core-subscriptions

Analyze the terminal output to locate any version of Web3 core subscriptions in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The npm ls web3-core-subscriptions command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), where the product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. In Web3 core subscriptions, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-57330 Affected Web3 core subscriptions Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
web3-core-subscriptions
npm/web3-core-subscriptions
npm
≤ 2.0.0-alpha.1

References

NVD — CVE-2025-57330 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-57330
Security Fix Commit FIX COMMIT
https://github.com/web3/web3.js/commit/d9660426c12210c5071aeb4e1a647c6ea9d67b12
Web3 core subscriptions Source Repository REPOSITORY
https://github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/web3-core-subscriptions%401.10.4/index.js
Web3 core subscriptions Source Repository REPOSITORY
https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57330
Web3 core subscriptions Source Repository REPOSITORY
https://github.com/web3/web3.js

Frequently Asked Questions

What is CVE-2025-57330?
CVE-2025-57330 is a security vulnerability in Web3 core subscriptions involving web3-core-subscriptions has a Prototype Pollution vulnerability under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Web3 core subscriptions versions are affected?
Affected versions include releases prior to current release patches across affected packages: web3-core-subscriptions.
What version fixes CVE-2025-57330?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is web3-core-subscriptions affected?
Yes, web3-core-subscriptions is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with CVE-2025-57330?
CVE-2025-57330 is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.).
How can I check npm dependencies for CVE-2025-57330?
Run the dependency tree command: 'npm ls web3-core-subscriptions'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hhf6-3xpg-pggx",
  "modified" : "2025-09-25T16:46:20Z",
  "published" : "2025-09-24T21:30:37Z",
  "aliases" : [ "CVE-2025-57330" ],
  "summary" : "web3-core-subscriptions has a Prototype Pollution vulnerability",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "web3-core-subscriptions"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.0.0-alpha.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-57330"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/web3/web3.js/commit/d9660426c12210c5071aeb4e1a647c6ea9d67b12"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/web3-core-subscriptions%401.10.4/index.js"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57330"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/web3/web3.js"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-09-25T16:46:20Z",
    "nvd_published_at" : "2025-09-24T19:15:39Z"
  }
}