CVE-2026-105257: CWE-639 Authorization Bypass Through User-Controlled Key in Appointment Booking Plugin
Description
The Appointment Booking Plugin WordPress plugin before 5.7.5 does not verify that an authenticated agent-level user is assigned to a customer before returning or searching that customer's record, allowing any agent to read and enumerate the personal information of every customer on the site, including those managed by other agents.
CVSS v3.1
Score 2.7low
Affected software
Appointment Booking Plugin
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-105257 is an authorization bypass vulnerability (CWE-639) in the Appointment Booking Plugin for WordPress versions prior to 5.7.5. The plugin fails to verify that an authenticated agent-level user is assigned to a specific customer before returning or searching that customer's record. As a result, any agent can access personal information of every customer on the site, including those assigned to other agents, leading to unauthorized data disclosure.
Potential Impact
Any authenticated agent-level user can read and enumerate personal information of all customers managed by the plugin, including those not assigned to them. This results in unauthorized disclosure of sensitive customer data, potentially violating privacy and data protection requirements.
Mitigation Recommendations
Upgrade the Appointment Booking Plugin to version 5.7.5 or later, where this authorization bypass vulnerability is fixed. No other mitigation guidance is provided, and patch status is implied by the affected versions range.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-10-04T19:01:02.779Z
- State
- PUBLISHED
Threat ID: 6ad855d82cdf04f656afda3e
Added to database: 10/21/2026, 06:04:08 UTC
Last enriched: 10/21/2026, 06:49:02 UTC
Last updated: 10/21/2026, 11:05:01 UTC
Views: 4
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