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.
CVE-2023-5509 is a medium severity with CVSS 6.3 Vulnerability issue affecting the Plugin My Sticky Bar – Floating Notification Bar & Sticky Header (formerly myStickymenu). It affects Versions up to 2.6.4 and is fixed in 2.6.5.
Use the related hub and response guides to connect this CVE-2023-5509 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2023-5509 is tracked for the Plugin My Sticky Bar – Floating Notification Bar & Sticky Header (formerly myStickymenu) as medium severity with CVSS 6.3. The affected range is Versions up to 2.6.4. Update My Sticky Bar – Floating Notification Bar & Sticky Header (formerly myStickymenu) to 2.6.5 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 2.6.4.
Confirm My Sticky Bar – Floating Notification Bar & Sticky Header (formerly myStickymenu) is updated to 2.6.5 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
mystickymenu
View on wordpress.org
|
| CVE | CVE-2023-5509 |
| Patched Versions |
2.6.5
|
| Affected Versions |
Versions up to 2.6.4
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
My Sticky Bar <= 2.8.6 - Unauthenticated SQL Injection via 'stickymenu_contact_lead_form' Action
myStickymenu <= 2.5.1 - Authenticated Stored Cross-Site Scripting
My Sticky Bar <= 2.7.2 - Authenticated (Admin+) Stored Cross-Site Scripting
My Sticky Bar (formerly myStickymenu) <= 2.7.1 - Authenticated (Admin+) Stored Cross-Site Scripting
My Sticky Bar <= 2.6.6 - Cross-Site Request Forgery to Sensitive Information Exposure
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