CVE-2025-8483 MEDIUM

CVE-2025-8483: Discussion Board – WordPress Forum Plugin <= 2.5.5 - Authenticated (Subscriber+) Arbitrary Shortcode Execution

Vendor Marketingfire
Product Discussion Board – WordPress Forum Plugin
Weakness CWE-94 · Code injection
Published October 25, 2025
Last update April 8, 2026

CVSS base score

6.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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