CVE-2026-91050 latepoint CVE debrief

Who should care

Defenders responsible for WordPress installations with the Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress should assess exposure and prioritize verification of authorization checks and remediation efforts.

Why it matters

CVE-2026-91050 allows for Insecure Direct Object Reference / Missing Authorization in the Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress, enabling unauthenticated attackers to create approved appointments and read sensitive customer information. Defenders should prioritize verifying the presence and proper configuration of authorization checks, especially for versions up to and including 5.7.2, and restrict access to sensitive booking information.

• Verify authorization checks for order item access to prevent insecure direct object references.
• Restrict access to sensitive booking information to prevent unauthorized disclosure.
• Implement proper validation for params[presets][order_item_id] to prevent unauthorized booking creation.

Technical summary

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.

Defensive priority

Defenders should prioritize verifying the presence and proper configuration of authorization checks in the Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress, especially for versions up to and including 5.7.2, and restrict access to sensitive booking information.

Recommended defensive actions

• Verify the version of the Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress and upgrade to a version beyond 5.7.2 if possible.
• Restrict access to the steps__start and steps__load_step routes to prevent unauthorized booking creation and sensitive information disclosure.
• Implement proper authorization checks for order item access to prevent insecure direct object references.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and source item provide details on the vulnerability in the Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress. The vulnerability allows for Insecure Direct Object Reference / Missing Authorization, enabling unauthenticated attackers to create approved appointments and read sensitive customer information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.