Description
The RT Mega Menu plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'css[left]' parameter in all versions up to, and including, 1.5.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
References7
- plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/admi…
- plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/admi…
- plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/admi…
- plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/publ…
- plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/publ…
- plugins.trac.wordpress.org/changeset/3604791/rt-mega-menu/trunk…
- www.wordfence.com/threat-intel/vulnerabilities/id/4302ab90-f827…
Metrics
- CVSS 3.1
-
6.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 29 · as of 8 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.