High severity · published Sep 24, 2025
CVE-2025-57330
The web3-core-subscriptions is a package designed to manages web3 subscriptions
7.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Web3-core-subscriptions · Web3js
before 1.10.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-57330
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-57330
Broken Link
https://github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/web3-core-subscriptions%401.10.4/index.js
Third Party Advisory
https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57330