CVE-2026-8841: Andrewabarber Extra Settings For Rocketchat

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Extra Settings for RocketChat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rocketchat' shortcode's 'title' attribute in versions up to, and including, 0.1. This is due to insufficient input sanitization and output escaping in the rxstg_shortcode() function, which concatenates the user-supplied 'title' attribute directly into HTML output. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• Andrewabarber Extra Settings For Rocketchat: up to and including 0.1

Published 2026-06-09. Last modified 2026-07-23.