CVE-2026-1987

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.

PUBLISHED Reserved 2026-02-05 | Published 2026-02-14 | Updated 2026-02-17 | Assigner Wordfence

Problem types

CWE-639 Authorization Bypass Through User-Controlled Key

Product status

Timeline

Credits

MD. TAREQ AHAMED JONY finder

References

www.wordfence.com/...-743f-41f1-80ab-7f0805cae38c?source=cve

plugins.trac.wordpress.org/...get/trunk/scheduler-widget.php

plugins.trac.wordpress.org/...ags/0.1.6/scheduler-widget.php

owasp.org/...4-Testing_for_Insecure_Direct_Object_References

cwe.mitre.org/data/definitions/639.html

cwe.mitre.org/data/definitions/862.html

cve.org (CVE-2026-1987)

nvd.nist.gov (CVE-2026-1987)

Download JSON