Appointment Booking Calendar <= 1.6.9.29 - Missing Authorization to Unauthenticated Sensitive Information Exposure via Settings REST API Endpoint
| CVE | CVE-2026-3045 |
|---|---|
| CVSS | 7.5 (High) |
| Publicly Published | March 12, 2026 |
| Last Updated | March 13, 2026 |
| Researcher |
Muhammad Sharief
|
Description
The Appointment Booking Calendar — Simply Schedule Appointments plugin for WordPress is vulnerable to unauthorized access of sensitive data in all versions up to and including 1.6.9.29. This is due to two compounding weaknesses: (1) a non-user-bound `public_nonce` is exposed to unauthenticated users through the public `/wp-json/ssa/v1/embed-inner` REST endpoint, and (2) the `get_item()` method in `SSA_Settings_Api` relies on `nonce_permissions_check()` for authorization (which accepts the public nonce) but does not call `remove_unauthorized_settings_for_current_user()` to filter restricted fields. This makes it possible for unauthenticated attackers to access admin-only plugin settings including the administrator email, phone number, internal access tokens, notification configurations, and developer settings via the `/wp-json/ssa/v1/settings/{section}` endpoint. The exposure of appointment tokens also allows an attacker to modify or cancel appointments.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Simply Schedule Appointments
| Software Type | Plugin |
|---|---|
| Software Slug | simply-schedule-appointments (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.6.10.0, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Simply Schedule Appointments
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