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CVE-2021-23438

Prototype Pollution

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.

CVSS 3.1 · 5.6 Medium EPSS 1.7% KEV · Not listed
Vendors
Mpath Project
Products
Mpath
CVE-2018-16490

nodejs-mpath: prototype pollution in Object.prototype

A prototype pollution vulnerability was found in module mpath <0.5.1 that allows an attacker to inject arbitrary properties onto Object.prototype.

CVSS 3.0 · 7.5 High EPSS 1.1% KEV · Not listed
Vendors
Mpath Project
Products
Mpath