CVE-2026-105198: CWE-639 Authorization Bypass Through User-Controlled Key in Appointment Booking Plugin
Description
The Appointment Booking Plugin WordPress plugin before 5.7.3 does not verify that the caller owns the order referenced by an order-item identifier before rendering that order's confirmation summary, letting an unauthenticated visitor retrieve any customer's name, contact details and order confirmation code by supplying a sequential order-item id.
CVSS v3.1
Score 5.3medium
Affected software
Appointment Booking Plugin
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-105198 is an authorization bypass vulnerability in the Appointment Booking Plugin for WordPress prior to version 5.7.3. The plugin fails to verify that the caller owns the order referenced by an order-item identifier before rendering the order's confirmation summary. As a result, an unauthenticated attacker can retrieve sensitive customer information such as names, contact details, and order confirmation codes by supplying sequential order-item IDs.
Potential Impact
An attacker can access personal and order confirmation information of any customer without authentication. This compromises customer privacy and could facilitate further attacks such as social engineering or fraud. There is no indication of remote code execution or system compromise from this vulnerability alone.
Mitigation Recommendations
Upgrade the Appointment Booking Plugin to version 5.7.3 or later, where this authorization check issue has been fixed. No other mitigations are indicated. Patch status is confirmed by the version boundary in the affectedVersions field.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-10-04T11:59:38.456Z
- State
- PUBLISHED
Threat ID: 6ac735dc2cdf04f656f03ec6
Added to database: 10/08/2026, 06:19:08 UTC
Last enriched: 10/08/2026, 06:33:58 UTC
Last updated: 10/09/2026, 05:48:07 UTC
Views: 14
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