---
cve: "CVE-2026-14855"
severity: "MEDIUM"
cvss: 6.4
epss: "0.2%"
vendor: "themewant"
kev: false
exploited: false
published: "2026-09-18 02:27:53"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T20:04:43+02:00"
---

# CVE-2026-14855

> 6.4 MEDIUM

## Beschreibung

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-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-14855) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_