CVE-2026-5465 | ameliabooking Booking for Appointments and Events Calendar Plugin wp_set_password/wp_update_user authorization

VDB-355715 · CVE-2026-5465 · GCVE-0-2026-5465 AMELIABOOKING BOOKING FOR APPOINTMENTS AND EVENTS CALENDAR PLUGIN WP_SET_PASSWORD/WP_UPDATE_USER AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.4 $0-$5k 1.94+ Summaryinfo A vulnerability has been found in ameliabooking Booking for Appointments and Events Calendar Plugin up to 2.1.3 on WordPress and classified as critical. This affects the function wp_set_password/wp_update_user. The manipulation of the argument externalId leads to authorization. This vulnerability is referenced as CVE-2026-5465. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded. Detailsinfo A vulnerability was found in ameliabooking Booking for Appointments and Events Calendar Plugin up to 2.1.3 on WordPress. It has been rated as critical. This issue affects the function wp_set_password/wp_update_user. The manipulation of the argument externalId with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is confidentiality, integrity, and availability. The summary by CVE is: The Booking for Appointments and Events Calendar – Amelia plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.1.3. This is due to the `UpdateProviderCommandHandler` failing to validate changes to the `externalId` field when a Provider (Employee) user updates their own profile. The `externalId` maps directly to a WordPress user ID and is passed to `wp_set_password()` and `wp_update_user()` without authorization checks. This makes it possible for authenticated attackers, with Provider-level (Employee) access and above, to take over any WordPress account — including Administrator — by injecting an arbitrary `externalId` value when updating their own provider profile. The weakness was published by Osvaldo Noe Gonzalez Del Rio. It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-5465 since 04/03/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. Upgrading to version 2.1.3 eliminates this vulnerability. Productinfo Type Calendar Software Vendor ameliabooking Name Booking for Appointments and Events Calendar Plugin Version 2.1.0 2.1.1 2.1.2 2.1.3 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 7.6 VulDB Meta Temp Score: 7.4 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 8.8 CNA Vector (Wordfence): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-639 / CWE-285 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Booking for Appointments and Events Calendar Plugin 2.1.3 Timelineinfo 04/03/2026 CVE reserved 04/07/2026 +4 days Advisory disclosed 04/07/2026 +0 days VulDB entry created 04/07/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: Osvaldo Noe Gonzalez Del Rio Status: Confirmed CVE: CVE-2026-5465 (🔒) GCVE (CVE): GCVE-0-2026-5465 GCVE (VulDB): GCVE-100-355715 Entryinfo Created: 04/07/2026 10:23 Changes: 04/07/2026 10:23 (67) Complete: 🔍 Cache ID: 99:227:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸