CVE-2026-24523CWE-497

WordPress WP FullCalendar plugin <= 1.6 - Sensitive Data Exposure vulnerability

Medium · published January 23, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
24.7
In the wild
Unconfirmed
What it is

⚠️ A simple misconfiguration can expose sensitive data to prying eyes! The WP FullCalendar plugin for WordPress has a vulnerability that allows unauthorized access to embedded system info. 🔍 Think of it like a restaurant leaving their secret ingredient list visible to customers. Anyone who glances over can learn not just the recipes but also the inner workings of your culinary secrets! If exploited, this vulnerability could allow unauthorized users to retrieve sensitive system information, which could lead to other attacks or data breaches. While not a catastrophic risk, it’s definitely something you don’t want lurking in your plugin arsenal!

Put simply

Think of it like a restaurant leaving their secret ingredient list visible to customers. Anyone who glances over can learn not just the recipes but also the inner workings of your culinary secrets! The vulnerability occurs in WP FullCalendar versions from n/a through 1.6, where sensitive system information is exposed due to inadequate access controls, allowing unauthorized retrieval of this data.

What to do

If exploited, this vulnerability could allow unauthorized users to retrieve sensitive system information, which could lead to other attacks or data breaches. While not a catastrophic risk, it’s definitely something you don’t want lurking in your plugin arsenal! To mitigate this vulnerability, update the WP FullCalendar plugin to the latest version. If you haven't already, review your configurations to ensure sensitive information is properly secured and not visible to unauthorized users. You've got this! By taking these steps, you'll be well on your way to keeping your site secure! 🛡️

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00328 · 24.7th percentile
Weakness
CWE-497 · Exposure of Sensitive System Information to an Unauthorized Control Sphere
Published
2026-01-23T14:28Z
EPSS history
Timeline
  • 23 JAN 14:28Z
    WordPress WP FullCalendar plugin <= 1.6 - Sensitive Data Exposure vulnerability
    cvelistv5