CVE-2026-24523 MEDIUM

CVE-2026-24523: WordPress WP FullCalendar plugin <= 1.6 - Sensitive Data Exposure vulnerability

Vendor Marcus (Aka @Msykes)
Product WP FullCalendar
Weakness CWE-497
Published January 23, 2026
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

WP FullCalendar versions 1.6 and earlier expose sensitive information that can be read over the network without authentication. An attacker can retrieve this data directly without needing to log in or interact with a site administrator. The vulnerability does not allow modification or deletion of data, only unauthorized reading.

What an attacker can do

03Attacker Capabilities

Read sensitive information from the plugin without logging in.

Potential impact on your site

04Site Impact

Confidential data stored by the plugin may be exposed to unauthenticated visitors.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

January 23, 2026 CVE published
April 28, 2026 Record updated