plugin
8 known security issues reported for the Wp Fullcalendar WordPress plugin. Most recent disclosed Feb 20, 2026.
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Scan your site free[en] Missing Authorization vulnerability in Marcus (aka @msykes) WP FullCalendar wp-fullcalendar allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WP FullCalendar: from n/a through <= 1.6.
The FullCalendar plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 1.6. This makes it possible for unauthenticated attackers to perform an unauthorized action.
The WP FullCalendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6. This makes it possible for unauthenticated attackers to extract sensitive user or configuration data.
[en] Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in Marcus (aka @msykes) WP FullCalendar wp-fullcalendar allows Retrieve Embedded Sensitive Data.This issue affects WP FullCalendar: from n/a through <= 1.6.
[en] Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Pixelite WP FullCalendar wp-fullcalendar allows Stored XSS.This issue affects WP FullCalendar: from n/a through 1.5.
The WP FullCalendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages th...
[en] The WP FullCalendar WordPress plugin before 1.5 does not ensure that the post retrieved via an AJAX action is public and can be accessed by the user making the request, allowing unauthenticated attackers to get the content of arbitrary posts, including draft/private as well as password-protected ones.
The WP FullCalendar plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on several AJAX actions in versions up to, and including, 1.4.1. This makes it possible for unauthenticated attackers to view arbitrary posts and pages regardless of password protection and whether they are...
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