CVE-2026-1704 Missing authorization in Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
Authenticated staff users can view other staff members' appointment records and sensitive customer PII due to missing ownership validation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1704?
CVE-2026-1704 is a medium-severity missing authorization vulnerability in croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin, published on 13 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.6.9.29. This is due to the `get_item_permissions_check` method granting access to users with the `ssa_manage_appointments` capability without validating staff ownership of the requested appointment. This makes it possible for authenticated attackers, with custom-level access and above (users granted the ssa_manage_appointments capability, such as Team Members), to view appointment records belonging to other staff members and access sensitive customer personally identifiable information via the appointment ID parameter.
Weakness: CWE-639
Which versions are affected by CVE-2026-1704?
How do I fix CVE-2026-1704?
No fix has been published for CVE-2026-1704 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-1704 being exploited?
There is no known exploitation of CVE-2026-1704 in the wild and no public exploit code.
Sources
Also known as GHSA-fq3v-mc83-wvwc.