CVE-2026-22351

HIGH 7.5

WordPress WP FullCalendar plugin <= 1.6 - Broken Access Control vulnerability

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

Missing Authorization vulnerability in Marcus (aka @msykes) WP FullCalendar wp-fullcalendar allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WP FullCalendar: from n/a through <= 1.6.

CWE	CWE-862
Vendor	marcus (aka @msykes)
Product	wp fullcalendar
Published	Feb 20, 2026
Last Updated	Apr 28, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Marcus (aka @msykes) / WP FullCalendar

0 ≤ 1.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/Wordpress/Plugin/wp-fullcalendar/vulnerability/wordpress-wp-fullcalendar-plugin-1-6-broken-access-control-vulnerability?_s_id=cve

Credits

Doan Dinh Van | Patchstack Bug Bounty Program