Vulnerabilities > CVE-2021-23438 - Type Confusion vulnerability in Mpath Project Mpath

Summary

This affects the package mpath before 0.8.4. A type confusion vulnerability can lead to a bypass of CVE-2018-16490. In particular, the condition ignoreProperties.indexOf(parts[i]) !== -1 returns -1 if parts[i] is ['__proto__']. This is because the method that has been called if the input is an array is Array.prototype.indexOf() and not String.prototype.indexOf(). They behave differently depending on the type of the input.

Vulnerable Configurations

Common Weakness Enumeration (CWE)

• CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

References