CVE-2026-0556

The XO Event Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'xoeventfield' shortcode in all versions up to, and including, 3.2.10 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for...

CVE-2026-0556 XO Event Calendar <= 3.2.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'xo_event_field' shortcode

The XO Event Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'xoeventfield' shortcode in all versions up to, and including, 3.2.10 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for...

CVE-2026-0556

CVE-2026-0556 concerns the XO Event Calendar WordPress plugin (versions

WordPress XO Event Calendar plugin <= 3.2.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'xo_event_field' shortcode vulnerability

Authenticated Contributor+ Stored Cross-Site Scripting via 'xoeventfield' shortcode vulnerability discovered by Muhammad Yudha - DJ in WordPress Plugin XO Event Calendar versions = 3.2.10...

XO Event Calendar < 2.3.7 - Reflected Cross-Site Scripting

The plugin does not escape the selected-name parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue https://example.com/wp-admin/edit.php?posttype=xoevent&page=xo-event-holiday-settings&selected-name="alert/XSS/...

XO Event Calendar < 2.3.7 - Reflected Cross-Site Scripting

The plugin does not escape the selected-name parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue PoC https://example.com/wp-admin/edit.php?posttype=xoevent=xo-event-holiday-settings&selected-name;="...