---
cve: "CVE-2026-18776"
severity: "CRITICAL"
cvss: 9.8
epss: "34%"
vendor: "Unknown"
kev: false
exploited: false
published: "2026-08-19 06:17:37"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T01:39:11+02:00"
---

# CVE-2026-18776

> 9.8 CRITICAL

## Beschreibung

The TrueBooker  WordPress plugin before 1.2.7 does not have proper authorisation checks in some of its AJAX actions, allowing unauthenticated users to change the email address of arbitrary users, including administrators, and subsequently take over their account via the password reset flow.

## CVSS-Vektor

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

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

## Referenzen

- <https://wpscan.com/vulnerability/4b6abb2d-941b-429f-a480-33d1aafad450/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-18776) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_