Cross-site scripting in themewant RT Mega Menu – Mega Menu Builder for Elementor &…
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-14855
- 2026-10-03 Alias added: GHSA-r4ch-x8vf-xx8j
- 2026-10-15 1 new reference · CNA
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/4302ab90-f827-4e25-b72f-d41542d3bad3?source=cve
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/public/includes/rtmega-nav-walker.php#L186
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/admin/includes/admin-ajax-request.php#L68
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/admin/includes/admin-ajax-request.php#L34
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/admin/includes/plugin-scripts.php#L81
- https://plugins.trac.wordpress.org/browser/rt-mega-menu/tags/1.5.1/public/includes/rt-mega-menu-terms.php#L82
- https://plugins.trac.wordpress.org/changeset/3604791/rt-mega-menu/trunk/admin/includes/admin-ajax-request.php
More themewant vulnerabilities
- TI-2026-40422 WordPress Easy Elements for Elementor – Addons & Website Templates plugin <= 1.4.9 - Privilege Escalation vulnerability CVSS 3.1CRITICAL 9.8
- TI-2026-06393 Easy Elements for Elementor <= 1.4.4 - Unauthenticated Privilege Escalation via easyel_handle_register CVSS 3.1CRITICAL 9.8
- TI-2026-07929 Improper privilege management in themewant Easy Elements for Elementor – Addons & Website… CVSS 3.1HIGH 8.8
- TI-2026-46605 Missing authorization in themewant RT Mega Menu – Mega Menu Builder for Elementor &… CVSS 3.1MEDIUM 6.5
- TI-2025-41614 WordPress Easy Hotel Booking plugin <= 1.9.2 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
- TI-2026-42522 Cross-site scripting in themewant RT Mega Menu – Mega Menu Builder for Elementor &… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-14855 · CVE Program
- CVE-2026-14855 · NVD
- FIRST EPSS
- GHSA-r4ch-x8vf-xx8j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences