CVE-2026-22351: Missing Authorization in Marcus (aka @msykes) WP FullCalendar
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.
AI Analysis
Technical Summary
This vulnerability in WP FullCalendar arises from missing authorization checks, allowing unauthorized access to certain functions or data. The affected versions are from an unspecified start version through 1.6. The CVSS vector indicates the attack can be performed remotely without privileges or user interaction, with no confidentiality impact but with integrity and availability impacts. No vendor advisory or patch links are currently available, and the product is not a cloud service.
Potential Impact
Exploitation of this vulnerability could allow an attacker to perform unauthorized actions that affect the integrity and availability of the affected system. There is no confidentiality impact reported. The medium CVSS score reflects these impacts. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or workaround information is provided, users of WP FullCalendar should monitor the vendor's communications for updates and consider restricting access to the plugin's functionalities until a fix is available.
CVE-2026-22351: Missing Authorization in Marcus (aka @msykes) WP FullCalendar
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in WP FullCalendar arises from missing authorization checks, allowing unauthorized access to certain functions or data. The affected versions are from an unspecified start version through 1.6. The CVSS vector indicates the attack can be performed remotely without privileges or user interaction, with no confidentiality impact but with integrity and availability impacts. No vendor advisory or patch links are currently available, and the product is not a cloud service.
Potential Impact
Exploitation of this vulnerability could allow an attacker to perform unauthorized actions that affect the integrity and availability of the affected system. There is no confidentiality impact reported. The medium CVSS score reflects these impacts. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or workaround information is provided, users of WP FullCalendar should monitor the vendor's communications for updates and consider restricting access to the plugin's functionalities until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-01-07T12:21:19.920Z
- Cvss Version
- null
- State
- PUBLISHED
Threat ID: 6998ca00be58cf853bab9209
Added to database: 2/20/2026, 8:54:24 PM
Last enriched: 4/3/2026, 11:07:16 AM
Last updated: 4/7/2026, 1:34:50 PM
Views: 47
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