WordPress · Scheduler Widget · CVE-2026-1987
**Name of the Vulnerable Software and Affected Versions**
Scheduler Widget versions prior to 0.1.7
**Description**
The Scheduler Widget plugin for WordPress is susceptible to an Insecure Direct Object Reference issue. The `scheduler widget ajax save event()` function does not adequately verify authorization or ownership when updating events. This allows authenticated attackers with Subscriber-level access or higher to modify any event in the scheduler by manipulating the `id` parameter, provided they know the event ID.
**Recommendations**
Update the Scheduler Widget plugin to version 0.1.7 or later.