Calendar.online / Kalender.digital – Plugin
Calendar.online / Kalender.digital – Plugin has 2 disclosed vulnerabilities in the WordSec catalog, reported between 2024 and 2025; all 2 are fixed as of September 2026. Their average CVSS score is 6.4, and the most serious one scores 6.4 out of 10.
The most common weakness is Cross-Site Scripting, behind 2 of the records (100%).
Every one of the 2 issues recorded for Calendar.online / Kalender.digital – Plugin has a vendor fix available, so running the current release closes all known holes.
2 independent researchers contributed these findings, one record each. Calendar.online / Kalender.digital – Plugin is installed on roughly 2,000 WordPress sites, so each unpatched flaw has a wide blast radius. The current release is tested up to WordPress 7.1.
CVE-2025-62752Calendar.online / Kalender.digital <= 1.0.13 - Authenticated (Contributor+) Stored Cross-Site Scripting
Read the full analysisVulnerability Records

Calendar.online / Kalender.digital – Plugin
Author
kalender.digital
Plugin for the integration of a free calendar from Calendar.online or Kalender.digital Information With this plugin you can easily integrate a calendar on your website for free. The calendar is responsive and optimized for all devices by scaling with the size of your device. You can show your events in the day, week, month or year view. Daily start time, daily end time as well as the time interval are adjustable. For a better overview sub-calendars can be created in different colors. You can also manage your events conveniently outside your WordPress installation via a special access link, e.g. on your smartphone. How to use Please create a free account on Calendar.online (german speaking users: Kalender.digital). Add the shortcode below to your website. Exchange in the shortcode the link to the calendar with your “reader link”, which you received by email after registration. You can also find the “reader link” in the settings. You can now easily edit events and settings via your “administrator link”, which you received after registration. Shortcode [calendar_online height=650px width=100% link=https://calendar.online/45ebc4aef6fd5149539c] Calendar.online Calendar.online is a German GDPR (DSGVO) compliant company with server location in Germany. Our german website is Kalender.digital Help If you have problems with the plugin, please contact us at info@calendar.online
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