A missing authorization vulnerability in the Advanced Forms WordPress plugin allows unauthenticated attackers to bypass access controls, risking unauthorized data modification.

The plugin suffers from a missing authorization check (CWE-862) on sensitive functions. This allows an unauthenticated attacker to interact with the plugin's features in ways that should be restricted, potentially leading to unauthorized actions.

The ability to bypass access controls on a form-handling plugin can lead to significant integrity issues, such as the unauthorized modification of form data or configurations. With a CVSS score of 7.5, this poses a substantial risk to data integrity and site management, especially if the forms handle sensitive user input.

Immediate Action: As there is no patch currently available, users should deactivate the Advanced Forms plugin until a secure version is released by the vendor.

Proactive Monitoring: Audit site logs for unusual activity related to form submissions or administrative configuration changes that coincide with unauthenticated requests.

Compensating Controls: Utilize a Web Application Firewall (WAF) to implement custom rules that block unauthorized access attempts to the endpoints associated with the Advanced Forms plugin.

Public Exploit Available: Unknown

Given the evidence of a proof-of-concept, the risk of exploitation is credible. Users are strongly advised to deactivate the plugin immediately and monitor for vendor updates, as the vulnerability allows unauthorized access to sensitive plugin functionality.