WordPress WP-Invoice 4.3.1 Cross Site Scripting

WordPress WP-Invoice plugin version 4.3.1 suffers from a persistent cross site scripting vulnerability.

SHA-256 | 1198ae90a0a19ceea8037a4ba1f3a90e0f447c7505ff7bf4fad7fd12b756e2b3

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# Exploit Title: WordPress Plugin  WP-Invoice - Stored Cross Site Scripting
# Date: 25-04-2022
# Exploit Author: Mariam Tariq - HunterSherlock
# Vendor Homepage: https://wordpress.org/plugins/WP-Invoice/
# Version: 4.3.1
# Tested on: Firefox
# Contact me: [email protected]

# Vulnerable Code:
```
 wpi.business_name = '<?php echo ($wpi_settings['business_name']); ?>';
``

# POC
1.  Install the WP-Invoice WordPress plugin and activate it.
2. Go to WP-Invoice settings  and inside the Business Name field inject XSS
payload “><img src=x onerror=alert(1)>
3. XSS will trigger and will be stored.

## POC Image

https://imgur.com/rsHIEO9

Source: packetstormsecurity.com