CVE-2026-24523

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

5.3 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.33%Up 0.3 points since Jan 24, 2026

What each source reports

CVE List Score used 5.3

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

Record: CVE-2026-24523
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-497
Updated: 2026-11-02

EUVDEUVD-2026-4392 5.3

Record: EUVD-2026-4392
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-mp3w-p427-6237 7.5

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in...

Record: GHSA-mp3w-p427-6237
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-497
Updated: 2026-11-02

NVD 5.3

Record: CVE-2026-24523
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-497
Updated: 2026-11-02

Affected products

marcus (aka @msykes) wp fullcalendar

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-24523 is a medium vulnerability (CVSS 5.3) in Marcus (aka @msykes) Wp Fullcalendar, published January 23, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.33%, the 26th percentile. No source names a fixed version.