What’s Vulnerable › Vulnerabilities
CVE-2026-15385: RT Mega Menu < 1.5.2 - Subscriber+ Stored XSS via Menu Item CSS
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-02 · updated 2026-08-26
- Weakness: CWE-79
Description
The RT Mega Menu WordPress plugin before 1.5.2 does not perform a capability check on the AJAX action that saves mega-menu configuration and per-menu-item settings; its only gate is a nonce that any logged-in user can read from a standard admin page. A subscriber-level user can therefore enable the mega menu on a site menu and store a menu-item style value that is rendered, without output escaping, into a style attribute on the public navigation. By breaking out of that attribute the user persists a JavaScript event handler that executes for every visitor who hovers the navigation, including administrators, leading to session/site takeover.
Affected products
- RT Mega Menu: before 1.5.2 — fixed in 1.5.2
How to fix
Upgrade to a fixed version: RT Mega Menu 1.5.2. Check the vendor advisory for mitigations.
References
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