CVE-2025-57329

web3-core-method is vulnerable to prototype pollution

7.5 High

web3-core-method is a package designed to creates the methods on the web3 modules. A Prototype Pollution vulnerability in the attachToObject function of web3-core-method 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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.39%Up 0.4 points since Sep 25, 2025

What each source reports

CVE List Score used 7.5

Record: CVE-2025-57329
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1321
Updated: 2026-11-02

EUVDEUVD-2025-31063 7.5

Record: EUVD-2025-31063
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-2j4c-9qqq-896r 2.9

web3-core-method is vulnerable to prototype pollution

Record: GHSA-2j4c-9qqq-896r
CVSS 4.0: 2.9 LowCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Weakness: CWE-1321
Updated: 2026-11-02

NVD 7.5

Record: CVE-2025-57329
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1321
Updated: 2026-11-02

OSVGHSA-2j4c-9qqq-896r 2.9

web3-core-method is vulnerable to prototype pollution

Record: GHSA-2j4c-9qqq-896r
CVSS 4.0: 2.9 LowCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Weakness: CWE-1321
Updated: 2026-11-02

Affected products

web3js web3-core-method

Affected packages

Affected packages
Package	Affected	Fixed
`web3-core-method` npm	through 1.10.3	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-57329 is a high vulnerability (CVSS 7.5) in Web3js Web3-core-method, published September 24, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.39%, the 33rd percentile. No source names a fixed version.