Medium severity6.4NVD Advisory· Published Dec 14, 2024· Updated Jun 17, 2026
CVE-2024-11855
CVE-2024-11855
Description
The Koalendar – Events & Appointments Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘height’ parameter in all versions up to, and including, 1.0.2 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 that will execute whenever a user accesses an injected page.
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Affected products
2Patches
Vulnerability mechanics
References
4- plugins.trac.wordpress.org/browser/koalendar-free-booking-widget/trunk/koa-wordpress.phpnvd
- plugins.trac.wordpress.org/changeset/3207869/koalendar-free-booking-widget/trunk/koa-wordpress.phpnvd
- wordpress.org/plugins/koalendar-free-booking-widget/nvd
- www.wordfence.com/threat-intel/vulnerabilities/id/cbbbf5fe-0369-4de6-9b2f-957286b6f394nvd
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