CVE-2026-12111 json
Appointment Booking Calendar <= 1.4.01 - Authenticated (Contributor+) Sensitive Information Exposure via 'id' Parameter
published 2026-06-18 4 mo ago modified 2026-06-18 4 mo ago also EUVD-2026-37864
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected products
- codepeople Appointment Booking Calendar
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/e1ecc237-87b0-4c4d-94cc-d3af9c6669c5?source=cve
- plugins.trac.wordpress.org /browser/appointment-booking-calendar/tags/1.3.99/inc/cpabc_apps_go.inc.php#L1018
- plugins.trac.wordpress.org /browser/appointment-booking-calendar/trunk/inc/cpabc_apps_go.inc.php#L1018
- plugins.trac.wordpress.org /browser/appointment-booking-calendar/trunk/inc/cpabc_apps_go.inc.php#L1019
- plugins.trac.wordpress.org /browser/appointment-booking-calendar/tags/1.3.99/inc/cpabc_apps_go.inc.php#L1019
- plugins.trac.wordpress.org /browser/appointment-booking-calendar/trunk/inc/cpabc_apps_go.inc.php#L945
- plugins.trac.wordpress.org /browser/appointment-booking-calendar/tags/1.3.99/inc/cpabc_apps_go.inc.php#L945
- plugins.trac.wordpress.org /browser/appointment-booking-calendar/trunk/cpabc_appointments.php#L142
- plugins.trac.wordpress.org /browser/appointment-booking-calendar/tags/1.3.99/cpabc_appointments.php#L142
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=3570448%40appointment-booking-calendar&new=3570448%40appointmen
Sources
- CVE List CVE-2026-12111
- NVD CVE-2026-12111
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.