What the vulnerability does
01Description
The The Discussion Board – WordPress Forum Plugin plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.5.5. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes.
Explanation of Vulnerability in Simple Terms
02Summary
The Discussion Board WordPress plugin versions 2.5.5 and earlier contain a code injection vulnerability in how it processes user input. An authenticated user with low privileges can inject and execute arbitrary code through forum functionality. This allows attackers to modify site content, access sensitive data, or disrupt site operations without requiring user interaction.
What an attacker can do
03Attacker Capabilities
Inject and run arbitrary code on the site to modify content, steal data, or disrupt operations.
Potential impact on your site
04Site Impact
Forum members can inject code affecting site integrity, confidentiality, and availability without admin knowledge.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account (e.g., forum member) on the site.
Key dates
06Disclosure timeline
October 25, 2025
CVE published
April 8, 2026
Record updated