CVEs-PoC/2021/CVE-2021-42581.md

### [CVE-2021-42581](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42581)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

Prototype poisoning in function mapObjIndexed in Ramda 0.27.0 and earlier allows attackers to compromise integrity or availability of application via supplying a crafted object (that contains an own property "__proto__") as an argument to the function. NOTE: the vendor disputes this because the observed behavior only means that a user can create objects that the user didn't know would contain custom prototypes

### POC

#### Reference
- https://github.com/ramda/ramda/pull/3192

#### Github
No PoCs found on GitHub currently.