Stored Cross-Site Scripting Vulnerability in Game Review Block Plugin for WordPress

CVE-2025-5923

What is CVE-2025-5923?

The Game Review Block plugin for WordPress has a vulnerability that allows authenticated users with Contributor-level access or higher to inject arbitrary web scripts via the ‘className’ parameter. This vulnerability arises from insufficient input sanitization and output escaping within the plugin, affecting all versions up to and including 4.8.1. When a page containing the malicious script is accessed by other users, it executes the injected scripts, leading to potential compromise of user sessions and site integrity.

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