---
cve: "CVE-2026-91847"
severity: "MEDIUM"
cvss: 4.8
epss: "0.1%"
vendor: "Unknown"
kev: false
exploited: false
published: "2026-09-19 07:16:33"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T15:19:21+02:00"
---

# CVE-2026-91847

> 4.8 MEDIUM

## Beschreibung

The Online Scheduling and Appointment Booking System  WordPress plugin before 28.2 does not verify that the requester owns the AI booking-assistant conversation named in its unauthenticated conversation actions, allowing any unauthenticated visitor to read another visitor's assistant messages and to inject messages into their in-progress conversation.

## CVSS-Vektor

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

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

## Referenzen

- <https://wpscan.com/vulnerability/9eef3086-3a67-4ee2-bd78-e346e7b05d62/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-91847) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_