CVE-2026-22351: WordPress WP FullCalendar plugin <= 1.6 - Broken Access Control vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-20 · updated 2026-06-17
Weakness: CWE-862

Description

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.

Affected products

Marcus (aka @msykes) WP FullCalendar: through 1.6

References

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

Get alerted when CVE-2026-22351 or the next vulnerability affects your stack