The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to 1.6.11.2 (exclusive). This makes it possible for unauthenticated attackers to extract sensitive user or configuration data.
CVE-2026-42384 is a medium severity with CVSS 5.3 Sensitive Information Exposure issue affecting the Plugin Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin. It affects Versions before 1.6.11.2 and is fixed in 1.6.11.2.
Use the related hub and response guides to connect this CVE-2026-42384 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2026-42384 is tracked for the Plugin Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin as medium severity with CVSS 5.3. The affected range is Versions before 1.6.11.2. Update Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin to 1.6.11.2 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions before 1.6.11.2.
Confirm Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin is updated to 1.6.11.2 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
simply-schedule-appointments
View on wordpress.org
|
| CVE | CVE-2026-42384 |
| Patched Versions |
1.6.11.2
|
| Affected Versions |
Versions before 1.6.11.2
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.7.7 - Authenticated (Subscriber+) SQL Injection
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.7.7 - Authenticated (Contributor+) SQL Injection via Shortcode
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.9.27 - Unauthenticated SQL Injection
Appointment Booking Calendar <= 1.6.10.0 - Unauthenticated SQL Injection via 'fields' Parameter
Appointment Booking Calendar <= 1.6.9.29 - Missing Authorization to Unauthenticated Sensitive Information Exposure via Settings REST API Endpoint
Appointment Booking Calendar <= 1.6.9.27 - Unauthenticated SQL Injection via 'append_where_sql' Parameter
Simply Schedule Appointments <= 1.6.9.9 - Unauthenticated SQL Injection via `order` and `append_where_sql` Parameters
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.8.5 - Unauthenticated Arbitrary Shortcode Execution
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