PT-2026-8086 · WordPress · Scheduler Widget

Morelmathieuj · Published 2026-02-14 · Updated 2026-02-14 · CVE-2026-1987

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

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.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-1987

Affected Products

Scheduler Widget

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2026-1987 · Security Note
• https://plugins.trac.wordpress.org/browser/scheduler-widget/trunk/scheduler-widget.php#L158 · Note
• https://t.me/CVEtracker/44710 · Telegram Post
• https://cwe.mitre.org/data/definitions/639.html · Note
• https://cwe.mitre.org/data/definitions/862.html · Note
• 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 · Note
• https://twitter.com/CVEnew/status/2022567886037094538 · Twitter Post
• https://plugins.trac.wordpress.org/browser/scheduler-widget/tags/0.1.6/scheduler-widget.php#L158 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/fd5f370c-743f-41f1-80ab-7f0805cae38c?source=cve · Note
• https://twitter.com/VulmonFeeds/status/2022653056081342711 · Twitter Post