CVE-2026-18441: LatePoint - Appointment Booking & Scheduling <= 5.6.9 - Unauthenticated Insecure Direct Object Reference to Sensitive Information Disclosure via 'customer[id]'

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Wordfence). Independent of NVD's CPE analysis and usually ahead of it.

• latepoint Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress

  • up to and including 5.6.9affected · semver

Other highest-scoring records for the same primary product.

• CVE-2026-110653Appointment Booking Plugin <= 5.7.4 - Unauthenticated Authentication Bypass via Race Condition on OTP Attempts Counter
  36Monitor
• CVE-2026-92966Appointment Booking Plugin <= 5.7.0 - Unauthenticated Arbitrary Shortcode Execution via First/Last Name Field
  36Monitor
• CVE-2026-104766Appointment Booking Plugin <= 5.7.3 - Authenticated (Custom+) Privilege Escalation to 'settings[default_wp_role_for_customer]' Parameter
  35Monitor

Published before and after this one in the same product

• ← EarlierCVE-2026-5391Aug 6, 2026 · LatePoint <= 5.3.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
  25Monitor
• Later →CVE-2026-13471Sep 18, 2026 · LatePoint <= 5.6.3 - Authenticated (Custom+) Insecure Direct Object Reference to Arbitrary Booking Deletion and Customer/Booking Data Disclosure via Abilities R
  17Monitor
• Later →CVE-2026-94432Oct 2, 2026 · Appointment Booking Plugin <= 5.7.1 - Insecure Direct Object Reference to Unauthenticated Unauthorized Transaction Intent Creation/Modification and Invoice Enum
  21Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

The endpoint fetches the record by the ID sent in the request, but never checks whether the record belongs to the requesting user.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1const invoice = await Invoice.findById(req.params.id);2res.json(invoice);

1const invoice = await Invoice.findOne({2  id: req.params.id,3  ownerId: req.user.id,4});5if (!invoice) return res.sendStatus(404);6res.json(invoice);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.