CVE-2026-8841
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
The Extra Settings for RocketChat plugin for WordPress up to version 0.1 is vulnerable to Stored XSS via the 'title' attribute of the 'rocketchat' shortcode. The rxstg_shortcode() function lacks input sanitization, allowing authenticated attackers with contributor-level access or higher to inject scripts.
Risk Assessment
Injected scripts execute on page load, potentially leading to data theft or account takeover.
Recommendation
Update the plugin and add proper sanitization and encoding for shortcode attributes.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

