CVE-2026-48079 Security feature bypass in appointment-booking-software
Attackers can retain valid session tokens after user logout due to improper cookie deletion order, allowing continued unauthorized access until session expiry.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-48079?
CVE-2026-48079 is a high-severity vulnerability in open-reception appointment-booking-software, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-613
Which versions are affected by CVE-2026-48079?
How do I fix CVE-2026-48079?
No fix has been published for CVE-2026-48079 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-48079 being exploited?
There is no known exploitation of CVE-2026-48079 in the wild and no public exploit code.
Sources
Also known as GHSA-hrhm-m2hm-7cjh.