CVE-2026-12113 | Appointment Booking Calendar <= 1.4.02 - Missing Authorization to Authenticated (Contributor+) Sensitive Information Disclosure

The Appointment Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.4.02 via the cpabc_appointments_filter_list. This makes it possible for authenticated attackers, with contributor-level access and above, to extract customer names, email addresses, phone numbers, appointment comments, and other booking personally identifiable information.

Published: 2026-07-01 Last update: 2026-07-01 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2026-12113 is rated Low Risk (21.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.23%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-12113

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-07-01 0.23%

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-12113

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
2.8 1.4 [email protected]

Weakness enumeration for CVE-2026-12113

GitHub Security Advisory for CVE-2026-12113

GHSA-jg95-92mw-5qqj · Severity: medium — The Appointment Booking Calendar plugin for WordPress is vulnerable to Sensitive Information...

Affected software / configurations for CVE-2026-12113

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-12113

URL Tags
https://plugins.trac.wordpress.org/browser/appointment-booking-calendar/tags/1.3.99/cpabc_appointments.php#L187
https://plugins.trac.wordpress.org/browser/appointment-booking-calendar/tags/1.3.99/inc/cpabc_apps_on.inc.php#L255
https://plugins.trac.wordpress.org/browser/appointment-booking-calendar/tags/1.3.99/inc/cpabc_apps_on.inc.php#L328
https://plugins.trac.wordpress.org/browser/appointment-booking-calendar/trunk/cpabc_appointments.php#L187
https://plugins.trac.wordpress.org/browser/appointment-booking-calendar/trunk/inc/cpabc_apps_on.inc.php#L255
https://plugins.trac.wordpress.org/browser/appointment-booking-calendar/trunk/inc/cpabc_apps_on.inc.php#L328
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3581633%40appointment-booking-calendar&new=3581633%40appointment-booking-calendar&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/3838bb64-fd85-43a4-97a2-7ca7930697ad?source=cve
cvelogic Threat Intelligence