CyberRota Analysis
AI-GeneratedThe Post SMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping of the 'user_email' parameter in versions up to 4.0.1. This flaw allows unauthenticated attackers to inject malicious scripts that execute when users access affected pages, particularly on WordPress Multisite installations with public registration enabled. WordPress site administrators using this plugin should prioritize patching to mitigate the risk of exploitation.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
The Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'user_email' parameter in all versions up to, and including, 4.0.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable without authentication on WordPress Multisite installations with public registration enabled, as WordPress accepts email addresses containing numeric HTML character references that Post SMTP's stricter validator rejects, persisting the attacker-controlled address verbatim to the email log via the failed-send exception message.