---
id: CVE-2026-48081
title: >-
  OpenReception's appointment booking software provides an end-to-end encrypted
  appointment booking platform
summary: >-
  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`,
  `p…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
published: '2026-08-06'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:51:43.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-48081'
references:
  - url: >-
      https://github.com/open-reception/appointment-booking-software/commit/98a107d4b4eaeab5cbb96ee0a28c2342b853eee0
    label: security-advisories@github.com
  - url: >-
      https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-xpr7-wx69-mp36
    label: security-advisories@github.com
  - url: >-
      https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-xpr7-wx69-mp36
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00244
epssPercentile: 0.13955
ingestedAt: '2026-09-08T21:11:12.270Z'
---

## Overview

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 `<a href="javascript:...">` 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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.