CVE-2026-15254: CWE-863 Incorrect Authorization in Simply Schedule Appointments
Simply Schedule Appointments WordPress plugin versions before 1.6.12.11 contain an authorization flaw where users with Contributor role and above can access all customers' appointment data site-wide. This occurs because the plugin does not properly check capabilities on an administrative appointment-listing shortcode and fails to restrict results to authorized users only. The exposed data includes names, email addresses, phone numbers, and notes of customers.
AI Analysis
Technical Summary
CVE-2026-15254 is an incorrect authorization vulnerability (CWE-863) in the Simply Schedule Appointments WordPress plugin prior to version 1.6.12.11. The plugin fails to perform proper capability checks on an administrative appointment-listing shortcode. Additionally, its per-user result scoping fails open for non-staff users, allowing users with the Contributor role or higher to disclose all customers' appointment records across the entire site, including sensitive personal information such as names, emails, phone numbers, and notes.
Potential Impact
Users with the Contributor role and above can access sensitive customer appointment data across the site without proper authorization. This leads to a confidentiality breach of personal information but does not affect integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Contributor and higher roles from accessing the affected shortcode or disable the plugin if possible to prevent unauthorized data disclosure.
CVE-2026-15254: CWE-863 Incorrect Authorization in Simply Schedule Appointments
Description
Simply Schedule Appointments WordPress plugin versions before 1.6.12.11 contain an authorization flaw where users with Contributor role and above can access all customers' appointment data site-wide. This occurs because the plugin does not properly check capabilities on an administrative appointment-listing shortcode and fails to restrict results to authorized users only. The exposed data includes names, email addresses, phone numbers, and notes of customers.
CVSS v3.1
Score 6.5medium
Affected software
Simply Schedule Appointments
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-15254 is an incorrect authorization vulnerability (CWE-863) in the Simply Schedule Appointments WordPress plugin prior to version 1.6.12.11. The plugin fails to perform proper capability checks on an administrative appointment-listing shortcode. Additionally, its per-user result scoping fails open for non-staff users, allowing users with the Contributor role or higher to disclose all customers' appointment records across the entire site, including sensitive personal information such as names, emails, phone numbers, and notes.
Potential Impact
Users with the Contributor role and above can access sensitive customer appointment data across the site without proper authorization. This leads to a confidentiality breach of personal information but does not affect integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Contributor and higher roles from accessing the affected shortcode or disable the plugin if possible to prevent unauthorized data disclosure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-07-09T12:55:11.383Z
- State
- PUBLISHED
Threat ID: 6a70364dbf32cb7a3418291f
Added to database: 08/03/2026, 06:33:49 UTC
Last enriched: 08/10/2026, 15:11:30 UTC
Last updated: 09/17/2026, 22:01:33 UTC
Views: 34
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