OpenReception Appointment Booking Software up to 1.0.1 Logout /logout SessionService.revokeSession improper authentication

Summaryinfo

A vulnerability described as critical has been identified in OpenReception Appointment Booking Software up to 1.0.1. The affected element is the function SessionService.revokeSession of the file /logout of the component Logout Handler. The manipulation results in improper authentication. This vulnerability is reported as CVE-2026-48079. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in OpenReception Appointment Booking Software up to 1.0.1. Affected is the function SessionService.revokeSession of the file /logout of the component Logout Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.2, when a user navigates to the `/logout` page, the page's server-side load handler deletes the `access_token` cookie before calling `/api/auth/logout` via an internal `event.fetch()`. The internal fetch consequently runs without the auth cookie, so `apiAuthHandle` rejects it, the logout handler never executes, and `SessionService.revokeSession()` is never called for the current session. The DB session row remains valid until its natural expiry (one week by default). The user sees a successful logout (cookie gone, UI returns to login), but any party still holding a copy of the now-deleted access token can continue making authenticated API calls until the session naturally expires. The root cause is a simple ordering mistake. The same auth subsystem implements the correct order in `/api/auth/logout`: revoke the current DB session first, then delete the cookie. The page-level wrapper does the opposite. Version 1.0.2 initiates server-side logout before removing authentication cookies and first appears in version 1.0.2. Version 2.0.0 later replaces this with a race-free client-side logout flow.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-48079 since 05/20/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available.

Upgrading to version 1.0.2 eliminates this vulnerability.

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Productinfo

Type

• Appointment Software

Vendor

• OpenReception

Name

• Appointment Booking Software

Version

• 1.0.0
• 1.0.1

CPE 2.3info

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CPE 2.2info

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