The Discussion Board – WordPress Forum Plugin for WordPress contains a code injection vulnerability (CWE-94) that permits authenticated users with Subscriber-level privileges or above to execute arbitrary shortcodes. This occurs because the plugin does not properly validate input before passing it to the WordPress do_shortcode function, enabling arbitrary shortcode execution. The vulnerability affects all versions up to and including 2.5.5. The CVSS 3.1 base score is 6.3, reflecting network attack vector, low attack complexity, low privileges required, no user interaction, and impacts to confidentiality, integrity, and availability.

An attacker with at least Subscriber-level access can exploit this vulnerability to execute arbitrary shortcodes, potentially leading to unauthorized actions within the WordPress environment. This may result in limited compromise of confidentiality, integrity, and availability of the affected site. There are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Subscriber-level access to trusted users and monitor for suspicious shortcode usage. Avoid granting unnecessary privileges to users. Follow updates from the plugin vendor for patches or official mitigations.