cve/2020/CVE-2020-7774.md

### [CVE-2020-7774](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7774)
![](https://img.shields.io/static/v1?label=Product&message=y18n&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%205.0.5%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Prototype%20Pollution&color=brighgreen)

### Description

The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution.

### POC

#### Reference
- https://github.com/yargs/y18n/issues/96
- https://github.com/yargs/y18n/issues/96
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038306
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038306
- https://snyk.io/vuln/SNYK-JS-Y18N-1021887
- https://snyk.io/vuln/SNYK-JS-Y18N-1021887
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpuApr2021.html

#### Github
- https://github.com/Live-Hack-CVE/CVE-2020-7774
- https://github.com/anthonykirby/lora-packet
- https://github.com/seal-community/patches