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CVE-2026-1987
MEDIUM5.4
Description
The Scheduler Widget plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 0.1.6. This is due to the `scheduler_widget_ajax_save_event()` function lacking proper authorization checks and ownership verification when updating events. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify any event in the scheduler via the `id` parameter granted they have knowledge of the event ID.
CVE Details
CVSS v3.1 Score5.4
SeverityMEDIUM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
Published2/14/2026
Last Modified2/18/2026
Sourcenvd
Honeypot Sightings0
Weaknesses (CWE)
CWE-639
References
https://cwe.mitre.org/data/definitions/639.html(security@wordfence.com)
https://cwe.mitre.org/data/definitions/862.html(security@wordfence.com)
https://owasp.org/www-project-web-security-testing-guide/latest/4-Web_Application_Security_Testing/05-Authorization_Testing/04-Testing_for_Insecure_Direct_Object_References(security@wordfence.com)
https://plugins.trac.wordpress.org/browser/scheduler-widget/tags/0.1.6/scheduler-widget.php#L158(security@wordfence.com)
https://plugins.trac.wordpress.org/browser/scheduler-widget/trunk/scheduler-widget.php#L158(security@wordfence.com)
IOC Correlations
No correlations recorded
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