---
id: "CVE-2026-65824"
kind: "vulnerability"
aliases: ["CVE-2026-65824"]
title: "OpenReception: replayed invite token lets attacker register passkey on invited account"
severity: "high"
cvss: 7.4
epss: 0.00419
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["appointment-booking", "openreception", "package", "self-hosted"]
not_affected_if: ["version-2.2.1-or-later"]
published_at: "2026-10-23T21:17:24+00:00"
first_seen_at: "2026-10-23T21:57:34+00:00"
updated_at: "2026-10-25T12:38:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65824", "first_seen_at": "2026-10-23T21:57:34+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-65824", "first_seen_at": "2026-10-25T12:38:49+00:00"}]
---

# OpenReception: replayed invite token lets attacker register passkey on invited account

OpenReception's appointment booking software before 2.2.1 lets an attacker who captures a pending invite token replay it to obtain a passkey-registration credential. The attacker can then register their own passkey on the invited account and take it over, including the tenant context for staff or tenant-admin invites.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed OpenReception version; unknown whether the sources give a specific command or file.
- Look for pending invites that were sent before the upgrade, since they may still hold replayable tokens: unknown whether the sources name a location.

## Fix

- Upgrade OpenReception to `2.2.1` or later.
- After upgrading, re-issue any pending invites and treat tokens sent before the upgrade as possibly captured: unknown whether the sources give further steps.

## Timeline

- 2026-10-23T21:57:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-65824
- 2026-10-25T12:38:49+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-65824

## From the sources

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 2.2.1, an attacker who captures a pending invite token can replay it to obtain a passkey-registration credential and register their own passkey on the invited account, taking control of that account. For a staff or tenant-admin invite this yields access to the tenant context tied to that account. This issue has been patched in version 2.2.1.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_