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CVE-2026-9055

CRITICAL 9.8 CVSS 3.1
Published
September 2, 2026
Last modified
September 2, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-269
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The Booking for Appointments and Events Calendar – Amelia (Premium) plugin for WordPress is vulnerable to Privilege Escalation in versions 8.0 - 9.6.2. This is due to insufficient validation of the attacker-controlled 'type' parameter in the customer update endpoint, which allows customers to set their role to 'manager' and trigger creation of a WordPress user with the wpamelia-manager role when the 'externalId' parameter is set to 0. This makes it possible for unauthenticated attackers to escalate their privileges to administrator by first elevating to the manager role, then creating a provider entity linked to an administrator user ID and overwriting that administrator's password.

Affected WordPress components

  • Booking for Appointments and Events Calendar – Amelia Plugin · ameliabooking
    Confirmed match Active
    From 8.0 (including) to 9.6.2 (including)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • melograno Booking for Appointments and Events Calendar – Amelia — From 8.0 (including) to 9.6.2 (including)

References

  • wpamelia.com https://wpamelia.com/documentation/changelog/
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/0c2266b8-cc23-46de-bc80-09e3d6294854?source=cve
  • nvd.nist.gov Official NVD record