WebinarPress – Webinar System for WordPress Security & Risk Analysis

The wp-webinarsystem plugin exhibits a concerning security posture, despite some positive code signals. While the majority of SQL queries and output operations are well-handled, a significant number of AJAX handlers (126) lack authentication checks, creating a substantial attack surface that could be exploited by unauthenticated users. The presence of the `unserialize` function, even if not directly flagged by taint analysis, warrants caution due to its potential for deserialization vulnerabilities if misused with untrusted data. The plugin's history of 10 known CVEs, with 5 currently unpatched and a significant portion being high or medium severity, paints a picture of recurring security weaknesses. Common vulnerability types like Missing Authorization, SSRF, Open Redirect, XSS, and CSRF indicate a pattern of insecure handling of user input and insufficient access controls. The recent vulnerability in 2025 suggests ongoing issues despite previous fixes. Overall, while some code hygiene is present, the extensive unprotected entry points and the troubling vulnerability history outweigh these strengths, indicating a high-risk plugin.