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CVE-2026-91050— Appointment Booking Plugin <= 5.7.2 - Insecure Direct Object Reference to Authenticated (Subscriber+) Unauthorized Booking Creation and Sensitive Information Disclosure via 'params[presets][order_item_id]' Parameter

Quick assessment

Affected
latepoint Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 插件 Appointment Booking Plugin – LatePoint

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-91050

Vulnerability Information
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Vulnerability Title
Appointment Booking Plugin <= 5.7.2 - Insecure Direct Object Reference to Authenticated (Subscriber+) Unauthorized Booking Creation and Sensitive Information Disclosure via 'params[presets][order_item_id]' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference / Missing Authorization in versions up to, and including, 5.7.2. This is due to the publicly reachable steps__start and steps__load_step routes accepting a params[presets][order_item_id] value that is copied verbatim into the booking object without verifying that the referenced order item belongs to the current customer, is a bundle item, is paid, or has remaining capacity — the is_bundle_scheduling() bundle discriminator is a mere !empty(order_item_id) truthiness check, and the code flow explicitly removes the customer and payment steps when this is truthy (the source even carries a TODO acknowledging the missing validation). This makes it possible for unauthenticated attackers to create approved appointments against other customers' order items and to read those customers' names, email addresses, and order codes returned in the booking confirmation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
latepoint Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress 0 ~ 5.7.2 -

II. Public POCs for CVE-2026-91050

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III. Intelligence Information for CVE-2026-91050

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Other References for CVE-2026-91050 (2)

Same Patch Batch · latepoint · 2026-10-10 · 3 CVEs total

CVE-2026-104766 8.8 HIGH Appointment Booking Plugin <= 5.7.3 - Authenticated (Custom+) Privilege Escalation to 'set
CVE-2026-96662 7.5 HIGH Appointment Booking Plugin <= 5.7.2 - Unauthenticated SQL Injection via 'booking[service_i

IV. Related Vulnerabilities

Same product: Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress
Same vendor: latepoint
Same weakness: CWE-639

V. Comments for CVE-2026-91050

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