HTML Forms – Simple WordPress Forms Plugin Security & Risk Analysis

The 'html-forms' plugin, version 1.6.4, exhibits a mixed security posture. While it demonstrates some good practices, such as a high percentage of prepared statements for SQL queries and a significant number of capability checks, there are several areas of concern. The presence of two AJAX handlers without authentication checks and three taint flows with unsanitized paths represent significant potential entry points for attackers. The vulnerability history is also a notable weakness, with a history of nine CVEs, including high and medium severity issues such as CSRF, XSS, and SQL Injection. Although there are currently no unpatched CVEs, the pattern of past vulnerabilities suggests a recurring struggle with secure coding practices in these areas.

Overall, the plugin has a moderate risk profile. The numerous past vulnerabilities, combined with the identified weaknesses in its current code analysis, point to a need for significant security improvements. While the plugin is actively maintained and has no unpatched CVEs at this time, the fundamental architectural issues like unprotected AJAX endpoints and unsanitized input flows mean that existing vulnerabilities could be reintroduced or new ones discovered. Users should exercise caution and ensure they are following best practices for plugin security, including regular updates and potential use of additional security hardening measures.