CVE-2026-15385 RT Mega Menu < 1.5.2 - Subscriber+ Stored XSS via Menu Item CSS
A subscriber can inject malicious JavaScript into menu styles, leading to session hijacking and site takeover for all visitors, including administrators.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-15385?
CVE-2026-15385 is a medium-severity cross-site scripting vulnerability in Unknown RT Mega Menu, published on 2 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-15385?
How do I fix CVE-2026-15385?
No fix has been published for CVE-2026-15385 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-15385 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15385 exists.
Sources
Also known as GHSA-9jvp-fc5f-j7qr.