Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/admin/include
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/admin/include
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/admin/include
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/public/includ
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/public/includ
- https://www.wordfence.com/threat-intel/vulnerabilities/id/4302ab90-f827-4e25-b72
FAQ
What is CVE-2026-14855?
CVE-2026-14855 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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 ...
How severe is CVE-2026-14855?
CVE-2026-14855 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-14855?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.