Online Scheduling and Appointment Booking System <= 28.2 - Insecure Direct Object Reference to Unauthenticated Arbitrary Booking Token Disclosure and Deletion via 'order_id' Parameter

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93399
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 07:16:56 UTC
Updated2026-09-26 23:16:39 UTC
DescriptionThe Bookly plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 28.2 via the 'bookly_get_form_id', 'bookly_render_complete', 'bookly_add_to_calendar' and 'bookly_rollback_order' AJAX actions. This is due to the 'bookly_get_form_id' handler blindly storing the attacker-controlled 'order_id' from the submitted form_data into a new booking session, which the 'bookly_render_complete' handler then trusts to look up and return the corresponding Order's secret token without verifying that the current session created that order. This makes it possible for unauthenticated attackers to enumerate sequential order IDs, disclose other customers' order tokens, retrieve calendar/appointment information via 'bookly_add_to_calendar' and permanently delete arbitrary non-completed bookings via 'bookly_rollback_order', which cascade-deletes the customer_appointment and (when no other customers are attached) the underlying appointment.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS: 0.003700000 probability, percentile 0.284040000 (date 2026-09-29)

Problem Types: CWE-639 | CWE-639 CWE-639 Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
3.1CNADECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ladela Online Scheduling And Appointment Booking System Bookly affected 28.2 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/d45a01e5-0e69-4d95-b609-b9002... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Theklis (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-17T21:05:40.000ZVendor Notified
CNA2026-09-24T18:12:07.000ZDisclosed

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