PT-2026-50638 · Codepeople · Appointment Booking Calendar
Chloe Chamberland
+1
·
Published
2026-06-18
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Updated
2026-06-18
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CVE-2026-12111
CVSS v3.1
4.3
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
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.
Fix
Information Disclosure
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Weakness Enumeration
Related Identifiers
Affected Products
Appointment Booking Calendar