myStickymenu <= 2.6.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Form Lead Deletion

6.3
Missing Authorization
CVE CVE-2023-5509
CVSS 6.3 (Medium)
Publicly Published October 27, 2023
Last Updated January 22, 2024
Researcher Krzysztof Zając - CERT PL

Description

The Floating Notification Bar, Sticky Menu on Scroll, Announcement Banner, and Sticky Header for Any Theme – My Sticky Bar (formerly myStickymenu) plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the my_sticky_menu_bulks() function in all versions up to, and including, 2.6.4. This makes it possible for authenticated attackers, with subscruber-level access and above, to delete arbitrary form leads. There were several additional AJAX actions in the plugin with missing capability checks as well such as mystickymenu_admin_send_message_to_owner(), stickymenu_widget_delete(), mystickymenu_widget_status() and more that make is possible for authenticated attackers to perform unauthorized actions.

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Vulnerability Details for Floating Notification Bar, Sticky Menu on Scroll, Announcement Banner, and Sticky Header for Any Theme – My Sticky Bar (formerly myStickymenu)

Software Type Plugin
Software Slug mystickymenu (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.6.5, or a newer patched version
Affected Version
  • <= 2.6.4
Patched Version
  • 2.6.5

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