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CVE-2026-104012: Rox Appointment Booking – Appointment Booking Scheduling Solution Improper Privilege Management (CVSS 8.8)

CVE-2026-104012 is a high severity improper privilege management in Rox Appointment Booking – Appointment Booking Scheduling Solution with a CVSS score of 8.8. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Last updated: Oct 31, 2026

Quick answer

Direct answer

CVE-2026-104012 is a high severity improper privilege management in Rox Appointment Booking – Appointment Booking Scheduling Solution with a CVSS score of 8.8. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Risk scores

CVSS base score
8.8HIGH
EPSS probability
n/a
CISA KEV
Not listed
CVSS metricWhat it means
Attack vector (AV:N)Network: reachable remotely
Attack complexity (AC:L)Low complexity
Privileges required (PR:N)No privileges required
User interaction (UI:R)A user must take an action
Scope (S:U)Scope unchanged
Confidentiality (C:H)High confidentiality impact
Integrity (I:H)High integrity impact
Availability (A:H)High availability impact

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

About Rox Appointment Booking – Appointment Booking Scheduling Solution

CVE-2026-104012 affects Rox Appointment Booking – Appointment Booking Scheduling Solution. Before acting, confirm where Rox Appointment Booking – Appointment Booking Scheduling Solution runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.

What the flaw is

In plain terms: The Rox Appointment Booking – Appointment Booking Scheduling Solution plugin for WordPress is vulnerable to Privilege Escalation via Mass Assignment in all versions up to, and including, 1.3.1 This is due to the public `/rox-appointment-booking/v1/public/booking` REST endpoint performing mass-assignment of the raw request body into a new customer row while `CustomerModel::$fillable` includes the internal `wp_user_id` column, allowing an unauthenticated attacker to persist an arbitrary WordPress user ID alongside an attacker-controlled email address with no authorization check. When an administrator subsequently opens the poisoned customer record and clicks Update Customer, `SaveCustomer::handleRequest()` passes the stored `wp_user_id` and attacker-supplied email to `wp_update_user()` — succeeding because `LinkedAccount::canChange()` unconditionally returns true when the acting user holds the `edit_users` capability — thereby overwriting the targeted administrator's email address and enabling full account takeover via a standard WordPress password-reset request. Successful exploitation requires an administrator to open and save the poisoned record, and the attacker must know or guess a valid administrator user ID (such as the default user ID 1).

The weakness class is Improper Privilege Management. Privileges are assigned or checked incorrectly.

Based on its CVSS vector, the flaw can be reached over the network, needs no login, and relies on a user taking an action. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Affected versions and timeline

FieldDetail
ProductRox Appointment Booking – Appointment Booking Scheduling Solution
Affected versionsSee the vendor advisory under Technical References
PublishedOct 31, 2026
Last modifiedOct 31, 2026
Added to CISA KEVNot listed
Assigning CNAsecurity@wordfence.com

How to detect it

  • Inventory every instance of Rox Appointment Booking – Appointment Booking Scheduling Solution and record the running version against the affected range above.
  • Check external attack surface scans for internet facing instances of the component.
  • Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
  • Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.

How to fix it

  • Apply the fixed version of Rox Appointment Booking – Appointment Booking Scheduling Solution named in the vendor advisory.
  • If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
  • Rescan after the change to prove the exposure is gone, then close the ticket.

CTEM action plan

CTEM stageWhat to do for this CVE
ScopeAdd every business service that depends on Rox Appointment Booking – Appointment Booking Scheduling Solution to the current CTEM cycle.
DiscoverFind all instances, including shadow and cloud deployments, and record versions and exposure.
PrioritizeRank using EPSS and CVSS together with asset exposure and business impact.
ValidateConfirm the flaw is reachable and exploitable in your environment and that compensating controls work.
MobilizeAssign the fix to the asset owner with a due date matched to the priority, then verify closure.

CWE References

Technical References

Frequently asked questions

CVE-2026-104012 is a high severity improper privilege management in Rox Appointment Booking – Appointment Booking Scheduling Solution with a CVSS score of 8.8. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

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