CVE-2026-100163
Description
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Authentication Bypass in versions up to, and including, 5.7.2 via the OsCustomerHelper::create_wp_user_for_customer() helper reached from the public process_step_customer() booking step. When the 'Use WordPress users as customers' option is enabled, the helper falls back from email_exists() to username_exists( $customer->email ), which matches any WordPress user whose user_login equals the victim customer's email even when that user's user_email is completely different, and links that WordPress user's ID into the victim's LatePoint customer row (only privileged roles are excluded; Subscriber is allowed). This makes it possible for authenticated attackers, with Subscriber-level access and above, to take over another customer's LatePoint account — accessing their bookings, service, agent, and calendar data, and having the victim customer's email overwritten with the attacker's on next login — by holding a Subscriber account whose user_login equals the victim's email and submitting an unauthenticated public booking step registration request.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/latepoint.php#L1072
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/customer_helper.php#L259
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/customer_helper.php#L274
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/steps_helper.php#L2146
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/steps_helper.php#L2156
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.3/lib/helpers/customer_helper.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2a942d71-7172-4e02-9faa-3a2c1c9e7fbd?source=cve
CWEs
CWE-287
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.