CVE-2026-15385: CWE-79 Cross-Site Scripting (XSS) in RT Mega Menu
CVE-2026-15385 is a cross-site scripting (XSS) vulnerability in the RT Mega Menu WordPress plugin before version 1.5.2. It arises because the plugin does not properly check user capabilities on an AJAX action that saves menu configurations, relying only on a nonce accessible to any logged-in user. This allows subscriber-level users to inject malicious JavaScript into the public navigation menu, which executes when visitors hover over the menu, potentially leading to session or site takeover.
AI Analysis
Technical Summary
The RT Mega Menu WordPress plugin versions prior to 1.5.2 fail to perform proper capability checks on an AJAX action responsible for saving mega-menu configuration and per-menu-item settings. The only protection is a nonce that any logged-in user can obtain from a standard admin page. Consequently, a subscriber-level user can enable the mega menu on a site menu and inject a style attribute value that includes malicious JavaScript. This script executes for every visitor who interacts with the navigation menu, including administrators, enabling session or site takeover via persistent cross-site scripting (CWE-79).
Potential Impact
An authenticated subscriber-level user can inject persistent malicious JavaScript into the public navigation menu, which executes in the browsers of all visitors who hover over the menu, including administrators. This can lead to session hijacking or full site takeover. The vulnerability impacts confidentiality and integrity but does not affect availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict subscriber-level user access or disable the RT Mega Menu plugin if possible to prevent exploitation.
CVE-2026-15385: CWE-79 Cross-Site Scripting (XSS) in RT Mega Menu
Description
CVE-2026-15385 is a cross-site scripting (XSS) vulnerability in the RT Mega Menu WordPress plugin before version 1.5.2. It arises because the plugin does not properly check user capabilities on an AJAX action that saves menu configurations, relying only on a nonce accessible to any logged-in user. This allows subscriber-level users to inject malicious JavaScript into the public navigation menu, which executes when visitors hover over the menu, potentially leading to session or site takeover.
CVSS v3.1
Score 5.4medium
Affected software
RT Mega Menu
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The RT Mega Menu WordPress plugin versions prior to 1.5.2 fail to perform proper capability checks on an AJAX action responsible for saving mega-menu configuration and per-menu-item settings. The only protection is a nonce that any logged-in user can obtain from a standard admin page. Consequently, a subscriber-level user can enable the mega menu on a site menu and inject a style attribute value that includes malicious JavaScript. This script executes for every visitor who interacts with the navigation menu, including administrators, enabling session or site takeover via persistent cross-site scripting (CWE-79).
Potential Impact
An authenticated subscriber-level user can inject persistent malicious JavaScript into the public navigation menu, which executes in the browsers of all visitors who hover over the menu, including administrators. This can lead to session hijacking or full site takeover. The vulnerability impacts confidentiality and integrity but does not affect availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict subscriber-level user access or disable the RT Mega Menu plugin if possible to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-07-10T09:44:49.218Z
- State
- PUBLISHED
Threat ID: 6a6f99c9bf32cb7a344bda17
Added to database: 08/02/2026, 19:26:01 UTC
Last enriched: 08/10/2026, 15:08:40 UTC
Last updated: 09/16/2026, 14:06:05 UTC
Views: 43
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