---
cve: "CVE-2026-48081"
severity: "HIGH"
cvss: 8.1
epss: "14%"
vendor: "open-reception"
kev: false
exploited: false
published: "2026-08-06 22:17:10"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-15T02:11:58+02:00"
---

# CVE-2026-48081

> 8.1 HIGH · 🧪 PoC

## Beschreibung

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.2, a TENANT_ADMIN can store `javascript:` URLs in the tenant `links` configuration (`website`, `imprint`, `privacyStatement`). These values are returned to the patient-facing landing page via `/api/public`, hydrated into the SvelteKit Button component, and rendered as `` elements without URL-scheme filtering. A patient who clicks any such link executes the attacker's JavaScript inside the patient browser origin, where patient form data is read before client-side encryption is applied. This breaks the project's central trust claim that the server is an untrusted relay and that administrators cannot read patient data. Patient-side encryption happens after form input, so JavaScript executing in the patient origin can read or alter the plaintext before encryption is performed. Version 1.0.2 fixes the issue.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 98a107d4b4eaeab5cbb96ee0a28c2342b853eee0 (Commit)

## Referenzen

- <https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-xpr7-wx69-mp36>
- <https://github.com/open-reception/appointment-booking-software/commit/98a107d4b4eaeab5cbb96ee0a28c2342b853eee0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-48081) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_