CVE-2026-8841
Extra Settings for RocketChat <= 0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
- State
- Published
- Severity
- 6.4 Medium
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Reserved
- May 18, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Extra Settings for RocketChatandrewabarber |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/061eeba3-10ad-4272-9880-dc01d4368683?source=cve
- https://plugins.trac.wordpress.org/browser/extra-settings-for-rocketchat/trunk/rocketchat-extra-settings.php#L350
- https://plugins.trac.wordpress.org/browser/extra-settings-for-rocketchat/trunk/rocketchat-extra-settings.php#L346
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