CVE-2026-1987

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.

• CWE-639

• https://cwe.mitre.org/data/definitions/639.html
• https://cwe.mitre.org/data/definitions/862.html
• 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
• https://plugins.trac.wordpress.org/browser/scheduler-widget/tags/0.1.6/scheduler-widget.php#L158
• https://plugins.trac.wordpress.org/browser/scheduler-widget/trunk/scheduler-widget.php#L158
• https://www.wordfence.com/threat-intel/vulnerabilities/id/fd5f370c-743f-41f1-80ab-7f0805cae38c?source=cve

Published

Feb 14, 2026

Last Modified

Jun 17, 2026

Status

Deferred

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-19859The JetFormBuilder WordPress plugin before 3.6.5.2 does not …6.5
• CVE-2026-1986The FloristPress for Woo – Customize your eCommerce store fo…6.1
• CVE-2026-19860The JetFormBuilder — Dynamic Blocks Form Builder WordPress p…5.5
• CVE-2026-19861The JetFormBuilder — Dynamic Blocks Form Builder WordPress p…4.7
• CVE-2026-19862The JetFormBuilder WordPress plugin before 3.6.5.2 does not …4.8
• CVE-2026-19869@neo4j/graphql from 5.2.0 until the patched versions fails t…7.6
• CVE-2026-19870Authorization Bypass Through User-Controlled Key in the payr…8.6
• CVE-2026-19871Use of Hard-coded Credentials in the human resources compone…9.3
• CVE-2026-19872HTML::FormHandler versions before 0.410000 for Perl allow cr…6.1
• CVE-2026-19873HTML::FormFu versions through 2.08 for Perl allow resource e…7.5
• CVE-2026-19874A heap-based buffer overflow vulnerability exists in Konami'…9.1
• CVE-2026-19875IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote a…7.5