CVE-2026-13228
HighCVSS 8.8Summary
The LatePoint plugin for WordPress up to version 5.6.3 is vulnerable to privilege escalation to Administrator due to an Insecure Direct Object Reference (IDOR) in the create_or_update() function and missing role verification in OsAuthHelper::authorize_customer(). An authenticated attacker with Agent-level access can overwrite any customer's email, including one linked to an Administrator account, and then log in as that user.
Risk Assessment
An attacker with limited Agent privileges can gain full administrative control over the WordPress installation, potentially leading to data theft, content manipulation, or malware installation.
Recommendation
Update the LatePoint plugin to the latest available version immediately. Until the update is applied, restrict Agent account access to trusted users only.
Original NVD description (English source)
The LatePoint – Calendar Booking Plugin for Appointments and Events plugin for WordPress is vulnerable to Privilege Escalation to Administrator in versions up to, and including, 5.6.3 This is due to an Insecure Direct Object Reference (IDOR) in the create_or_update() function of OsOrdersController, which allows an authenticated Agent to supply an arbitrary order[customer_id] and overwrite any LatePoint customer's email field (including one linked to a WordPress Administrator's account) through the public-scope customer set_data() call, combined with a missing role verification in OsAuthHelper::authorize_customer() which logs in the linked WordPress user without checking its role. This makes it possible for authenticated attackers, with custom (Agent)-level access and above, to elevate their privileges to Administrator.