CVE-2026-12111Network attack vector

Authenticated booking-data disclosure via unchecked calendar ID

Published Jun 18, 2026 · Updated Jun 18, 2026

Information disclosure in CodePeople Appointment Booking Calendar 1.4.01 and earlier allows remote authenticated users to read customer booking data. The cpabc_appointments_calendar_load2() handler accepts an arbitrary id value and loads that calendar after checking only the general edit_posts capability, without verifying calendar ownership. Contributor-level access is required; a crafted wp-admin request exposes names, email addresses, phone numbers, booking times, and comments from any plugin-managed calendar.

CVSS severity4.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in CodePeople Appointment Booking Calendar 1.4.01 and earlier allows remote authenticated users to read customer booking data. The cpabc_appointments_calendar_load2() handler accepts an arbitrary id value and loads that calendar after checking only the general edit_posts capability, without verifying calendar ownership. Contributor-level access is required; a crafted wp-admin request exposes names, email addresses, phone numbers, booking times, and comments from any plugin-managed calendar.

The record

CVE
CVE-2026-12111
Published
Jun 18, 2026
Updated
Jun 18, 2026
Vendor
CodePeople
Product
Appointment Booking Calendar
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.4.01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CodePeople · Appointment Booking Calendarversion=0 <=1.4.01

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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