CVEs-PoC/2021/CVE-2021-25980.md

### [CVE-2021-25980](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25980)
![](https://img.shields.io/static/v1?label=Product&message=talkyard&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=v0%3E%3D%20v0.04.01%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-74%20Improper%20Neutralization%20of%20Special%20Elements%20in%20Output%20Used%20by%20a%20Downstream%20Component%20('Injection')&color=brighgreen)

### Description

In Talkyard, versions v0.04.01 through v0.6.74-WIP-63220cb, v0.2020.22-WIP-b2e97fe0e through v0.2021.02-WIP-879ef3fe1 and tyse-v0.2021.02-879ef3fe1-regular through tyse-v0.2021.28-af66b6905-regular, are vulnerable to Host Header Injection. By luring a victim application-user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.

### POC

#### Reference
- https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25980

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