WordPress PrePost SEO 3.0 Cross Site Scripting

`Tittle:  
WordPress Plugin PrePost SEO <= 3.0 - Admin + Stored Cross-Site Scripting  
  
  
References:  
CVE-2023-2029  
  
Author:  
Taurus Omar   
  
Description:  
The plugin does not properly sanitize some of its settings, which could allow high-privilege users to perform Stored Cross-Site Scripting (XSS) attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)  
  
Affects Plugins:  
PrePost SEO - No known fix - plugin closed  
  
Proof of Concept:  
  
1. Add XSS payload to plugin's "Account API key" setting: "><iframe src="<svg onload=alert(4);>">  
  
2. Save and see XSS exploit.   
  
  
Classification:  
Type XSS   
OWASP top 10 A7: Cross-Site Scripting (XSS)  
CWE-79  
  
wpScan:  
https://wpscan.com/vulnerability/4889ad5a-c8c4-4958-b176-64560490497b  
`