CVE-2026-7797

May 28, 2026, 1:45 p.m.

7.5
High

Description

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.

Product(s) Impacted

Vendor Product Versions
Wordpress
  • Simply Schedule Appointments Booking Plugin
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-89
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a wordpress simply_schedule_appointments_booking_plugin / / / / / wordpress / /

References

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/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/1.6.11.2/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#L361
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/trunk/includes/lib/td-util/class-td-api-model.php#L361
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/changeset/3549843/simply-schedule-appointments/tags/1.6.11.9/includes/lib/td-util/class-td-db-model.php
https://www.wordfence.com/threat-intel/vulnerabilities/id/db3bddbd-44b0-4105-9039-0d669d643481?source=cve

Tags

[email protected]
CWE-89
2026-05-28
CVE-2026-7797

CVSS Score

7.5 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: HIGH
  • Integrity Impact: NONE
  • Availability Impact: NONE

    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

    View Vector String

Timeline

Published: May 28, 2026, 8:16 a.m.
Last Modified: May 28, 2026, 1:45 p.m.

Status : Deferred

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.