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9.8

OpenReception booking software lets attacker hijack accounts

CVE-2026-54460 · published 22 days ago
Summary

The OpenReception appointment system before version 1.1.1 lets anyone add a fake security key for a staff member without logging in. By using that key, an attacker can log in as the staff member and gain the ability to view or change tenant data. Upgrade to version 1.1.1 or later to close the gap.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
open-reception appointment-booking-software < 1.1.1
Original advisory text
OpenReception: Unauthenticated WebAuthn passkey injection via `POST /api/auth/passkeys` leads to account takeover
OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to 1.1.1, POST /api/auth/passkeys accepts a request-body userId and attacker-supplied passkey without an authenticated session, does not call WebAuthnService.verifyRegistration, and does not bind enrollment to locals.user.id. An unauthenticated attacker who knows the public tenant ID and the target staff email can use the public booking bootstrap and GET /api/tenants/[id]/appointments/staff-public-keys to obtain candidate userId values. The attacker first causes UserService.addAdditionalPasskey to store a controlled public key for a candidate userId, then attempts login with the target email; the login check compares verificationResult.userId with the email-resolved account and reveals whether the injected credential belongs to that target. Repeating this injection-before-login sequence identifies the matching userId, and the normal login endpoint accepts the attacker's assertion for the stored key and creates a STAFF session. The session can expose tenant data and reveal TENANT_ADMIN identifiers for further takeover; GLOBAL_ADMIN accounts are not reachable through this tenant-scoped path. A hijacked TENANT_ADMIN can modify or delete tenant resources and key shares, potentially making appointment data permanently undecryptable and taking booking services offline. This issue is fixed in version 1.1.1.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker full control
Severity
9.8 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-306Missing Authentication for Critical Function
Timeline
Published17 Sep 2026
Updated9 Oct 2026
First seen17 Sep 2026
Sources
CVE-2026-54460 · NVD
CVE-2026-54460 · MITRE
CVE-2026-54460 · OSV
GHSA-g233-m625-m3pc · GHSA
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