CVE-2024-21505
HIGHweb3-utils < 4.2.1 - Prototype Pollution via Format and MergeDeep Utility Functions
Title source: llmDescription
Versions of the package web3-utils before 4.2.1 are vulnerable to Prototype Pollution via the utility functions format and mergeDeep, due to insecure recursive merge. An attacker can manipulate an object's prototype, potentially leading to the alteration of the behavior of all objects inheriting from the affected prototype by passing specially crafted input to these functions.
References (2)
Core 2
Core References
Third Party Advisory
https://security.snyk.io/vuln/SNYK-JS-WEB3UTILS-6229337
Scores
CVSS v3
7.5
EPSS
0.0071
EPSS Percentile
48.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1321
Status
published
Products (2)
n/a/web3-utils
< 4.2.1
npm/web3-utils
4.0.1 - 4.2.1npm
Published
Mar 25, 2024
Tracked Since
Feb 18, 2026