CVE-2026-8841
Received Received - Intake
Stored XSS in Extra Settings for RocketChat WordPress Plugin

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Wordfence

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.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-09
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
CVE-2026-8841
EUVD
EUVD-2026-35298
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
rocket_chat extra_settings_for_rocketchat to 0.1 (inc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

The Extra Settings for RocketChat plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in its 'rocketchat' shortcode's 'title' attribute in versions up to and including 0.1.

This vulnerability occurs because the plugin does not properly sanitize or escape user input in the rxstg_shortcode() function, which directly inserts the user-supplied 'title' attribute into HTML output.

As a result, authenticated users with contributor-level access or higher can inject malicious scripts that will execute whenever any user views the affected page.

Impact Analysis

This vulnerability can allow attackers with contributor-level access to inject arbitrary web scripts into pages.

These scripts execute in the context of users who visit the injected pages, potentially leading to theft of user credentials, session hijacking, or unauthorized actions performed on behalf of users.

Because the attack requires authenticated access, it may be used to escalate privileges or compromise site integrity.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-8841. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart