CVEs-PoC/2021/CVE-2021-30157.md

### [CVE-2021-30157](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30157)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On ChangesList special pages such as Special:RecentChanges and Special:Watchlist, some of the rcfilters-filter-* label messages are output in HTML unescaped, leading to XSS.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/EdgeSecurityTeam/Vulnerability
- https://github.com/SexyBeast233/SecBooks
- https://github.com/tzwlhack/Vulnerability