CVE-2026-8181: Authentication Bypass in Burst Statistics Plugin

The impact of this vulnerability is severe. An unauthenticated attacker, possessing a valid administrator username, can bypass authentication by providing any arbitrary Basic Authentication password. This allows them to execute actions as that administrator for the duration of the request, including modifying website content, installing malicious plugins, accessing sensitive data, and potentially compromising the entire WordPress installation. The ease of exploitation, requiring only a username and a random password, significantly increases the risk of widespread attacks targeting sites running vulnerable versions of the plugin. This is similar to other Basic Authentication bypasses where improper validation allows unauthorized access.

1. 公開日2026-05-13

The primary mitigation is to immediately upgrade the Burst Statistics plugin to version 3.4.2 or later. If upgrading is not immediately feasible due to compatibility issues or breaking changes, consider temporarily disabling the plugin to prevent exploitation. While not a complete solution, implementing a Web Application Firewall (WAF) with rules to block suspicious Basic Authentication attempts can provide an additional layer of defense. Regularly review WordPress user accounts and permissions to ensure only authorized users have administrative access.