CVE-2026-12111: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in codepeople Appointment Booking Calendar
The Appointment Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 1.4.01. This is due to insufficient authorization and missing per-calendar ownership checks in the cpabc_appointments_calendar_load2() function, which is reachable via the cpabc_calendar_load2=1 query parameter in wp-admin and only checks is_admin() && current_user_can('edit_posts'), a capability available to Contributor-level users and above. This makes it possible for authenticated attackers with Contributor-level access and above to supply an arbitrary calendar ID via the id parameter and extract customer booking information, including email addresses, names, phone numbers, booking times, and comments, from any calendar managed by the plugin.
AI Analysis
Technical Summary
CVE-2026-12111 is a sensitive information exposure vulnerability in the Appointment Booking Calendar plugin for WordPress. The issue arises from inadequate authorization and missing per-calendar ownership verification in the cpabc_appointments_calendar_load2() function, which is accessible via the cpabc_calendar_load2=1 query parameter in the wp-admin interface. The function only verifies that the user is an admin and has the 'edit_posts' capability, which includes Contributor-level users and above. Consequently, an authenticated attacker with such permissions can specify an arbitrary calendar ID through the 'id' parameter and retrieve sensitive booking data from any calendar managed by the plugin.
Potential Impact
An attacker with Contributor-level access or higher can extract sensitive customer information including email addresses, names, phone numbers, booking times, and comments from any calendar in the plugin. This exposure compromises customer privacy but does not affect data integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Contributor-level user access or higher to trusted users only. Monitor for updates from the vendor regarding a security patch addressing this authorization flaw.
CVE-2026-12111: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in codepeople Appointment Booking Calendar
Description
The Appointment Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 1.4.01. This is due to insufficient authorization and missing per-calendar ownership checks in the cpabc_appointments_calendar_load2() function, which is reachable via the cpabc_calendar_load2=1 query parameter in wp-admin and only checks is_admin() && current_user_can('edit_posts'), a capability available to Contributor-level users and above. This makes it possible for authenticated attackers with Contributor-level access and above to supply an arbitrary calendar ID via the id parameter and extract customer booking information, including email addresses, names, phone numbers, booking times, and comments, from any calendar managed by the plugin.
CVSS v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12111 is a sensitive information exposure vulnerability in the Appointment Booking Calendar plugin for WordPress. The issue arises from inadequate authorization and missing per-calendar ownership verification in the cpabc_appointments_calendar_load2() function, which is accessible via the cpabc_calendar_load2=1 query parameter in the wp-admin interface. The function only verifies that the user is an admin and has the 'edit_posts' capability, which includes Contributor-level users and above. Consequently, an authenticated attacker with such permissions can specify an arbitrary calendar ID through the 'id' parameter and retrieve sensitive booking data from any calendar managed by the plugin.
Potential Impact
An attacker with Contributor-level access or higher can extract sensitive customer information including email addresses, names, phone numbers, booking times, and comments from any calendar in the plugin. This exposure compromises customer privacy but does not affect data integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Contributor-level user access or higher to trusted users only. Monitor for updates from the vendor regarding a security patch addressing this authorization flaw.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-06-12T14:40:58.131Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a339fe1f198dc38c15adc71
Added to database: 06/18/2026, 07:36:01 UTC
Last enriched: 06/18/2026, 07:50:23 UTC
Last updated: 08/02/2026, 07:17:55 UTC
Views: 65
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