CVE-2026-1987

MEDIUM EPSS 22.4%
Published Feb 14, 20264mo ago · Modified Jun 17, 20261w ago
5.4 CVSS 3.1
Medium
Find Similar
Published Feb 14, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.4
Exploitability
2.8
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
22.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-639

References 6

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.