CVEs-PoC/2021/CVE-2021-26929.md

### [CVE-2021-26929](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26929)
![](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 XSS issue was discovered in Horde Groupware Webmail Edition through 5.2.22 (where the Horde_Text_Filter library before 2.3.7 is used). The attacker can send a plain text e-mail message, with JavaScript encoded as a link or email that is mishandled by preProcess in Text2html.php, because bespoke use of \x00\x00\x00 and \x01\x01\x01 interferes with XSS defenses.

### POC

#### Reference
- http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html

#### Github
- https://github.com/2lambda123/CVE-mitre
- https://github.com/2lambda123/Windows10Exploits
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Offensive-Penetration-Security/OPSEC-Hall-of-fame
- https://github.com/nu11secur1ty/CVE-mitre
- https://github.com/nu11secur1ty/CVE-nu11secur1ty
- https://github.com/nu11secur1ty/Windows10Exploits