CVE-2026-7797Appointment Booking Calendar <= 1.6.11.8 - Unauthenticated SQL Injection via 'append_where_sql' Parameter
Updated under an hour ago ()
Does this affect you?
It affects croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'append_where_sql' parameter in all versions up to, and including, 1.6.11.8 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The /appointments/bulk REST endpoint is reachable by unauthenticated attackers because its permission check accepts a public nonce that is embedded in the booking widget's frontend JavaScript (ssa.api.public_nonce) and visible to all site visitors; exploitation requires issuing the request as a PUT with an application/x-www-form-urlencoded body so that PHP's superglobals are not populated and the blocklist check silently passes.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-89
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- May 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin croixhaug:appointment_booking_calendar_simply_schedule_appointments_booking_plugin (from the name) | through 1.6.11.8 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/db3bddbd-44b0-4105-9039-0d669d643481?source=cve
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/includes/lib/td-util/class-td-db-model.php#L1049
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.11.2/includes/lib/td-util/class-td-db-model.php#L1049
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/includes/lib/td-util/class-td-api-model.php#L304
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.11.2/includes/lib/td-util/class-td-api-model.php#L304
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/includes/lib/td-util/class-td-api-model.php#L361
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.11.2/includes/lib/td-util/class-td-api-model.php#L361
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.10.2/includes/lib/td-util/class-td-db-model.php#L1049
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.10.2/includes/lib/td-util/class-td-api-model.php#L304
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.10.2/includes/lib/td-util/class-td-api-model.php#L361
- https://plugins.trac.wordpress.org/changeset/3549843/simply-schedule-appointments/tags/1.6.11.9/includes/lib/td-util/class-td-db-model.php
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.