CVE-2024-11855

MEDIUM

Koalendar - Events & Appointments Booking Calendar <1.0.2 - XSS

Title source: llm

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.

References (4)

Core 4

Core References

Product

https://plugins.trac.wordpress.org/browser/koalendar-free-booking-widget/trunk/koa-wordpress.php#L29

https://plugins.trac.wordpress.org/changeset/3207869/koalendar-free-booking-widget/trunk/koa-wordpress.php

Product

https://wordpress.org/plugins/koalendar-free-booking-widget/#developers

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/cbbbf5fe-0369-4de6-9b2f-957286b6f394?source=cve

Scores

CVSS v3 6.4

EPSS 0.0037

EPSS Percentile 28.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (2)

koalendar/Koalendar – Easy Appointment Scheduling & Booking Plugin < 1.0.2

koalendar/Koalendar – Events & Appointments Booking Calendar < 1.0.2

Published Dec 14, 2024

Tracked Since Feb 18, 2026