CVEs-PoC/2021/CVE-2021-25933.md

### [CVE-2021-25933](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25933)
![](https://img.shields.io/static/v1?label=Product&message=OpenNMS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Cross-Site%20Scripting&color=brighgreen)

### Description

In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through meridian-foundation-2020.1.6-1 are vulnerable to Stored Cross-Site Scripting, since the function `validateFormInput()` performs improper validation checks on the input sent to the `groupName` and `groupComment` parameters. Due to this flaw, an authenticated attacker could inject arbitrary script and trick other admin users into downloading malicious files which can cause severe damage to the organization using opennms.

### POC

#### Reference
- https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25933

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