CVE-2024-21505
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductWeb3-utils
PublishedMar 25, 2024
First seenMar 25, 2024
Weakness typeCWE-1321Prototype pollution
How to fix
Update
- web3-utils4.2.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| web3-utilsnpm | 4.0.1 ≤ v < 4.2.1 | 4.2.1 |
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