CVE-2026-6937: CWE-862 Missing Authorization in croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.6.11.8 due to the plugin not properly verifying that a user is authorized to perform an action via the bulk appointments REST API endpoint. This makes it possible for unauthenticated attackers to modify arbitrary appointment records including customer PII, payment status, and meeting URL fields, and to expose full customer PII from existing appointment records via the bulk endpoint response. The public nonce is a static, user-independent value present in the HTML source of any page hosting the [ssa_booking] shortcode, meaning any visitor who has viewed such a page can obtain it and target any appointment in the system without authentication.
AI Analysis
Technical Summary
CVE-2026-6937 is a missing authorization vulnerability (CWE-862) in the Simply Schedule Appointments Booking Plugin for WordPress. The plugin fails to verify user authorization when handling requests to the bulk appointments REST API endpoint. Due to a static public nonce embedded in pages with the [ssa_booking] shortcode, unauthenticated users can retrieve and modify arbitrary appointment data, including customer personally identifiable information, payment status, and meeting URLs. This vulnerability affects all plugin versions up to and including 1.6.11.8.
Potential Impact
An attacker without authentication can access and alter appointment records, exposing sensitive customer data such as PII and payment status, and potentially disrupt appointment integrity by modifying meeting URLs. This compromises confidentiality and integrity of appointment data but does not affect system availability. The CVSS score of 5.3 reflects a medium severity impact with network attack vector and no privileges required.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Until a patch is available, restrict access to pages hosting the [ssa_booking] shortcode and monitor for unauthorized API activity. Avoid exposing the booking shortcode on publicly accessible pages if possible.
CVE-2026-6937: CWE-862 Missing Authorization in croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
Description
The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.6.11.8 due to the plugin not properly verifying that a user is authorized to perform an action via the bulk appointments REST API endpoint. This makes it possible for unauthenticated attackers to modify arbitrary appointment records including customer PII, payment status, and meeting URL fields, and to expose full customer PII from existing appointment records via the bulk endpoint response. The public nonce is a static, user-independent value present in the HTML source of any page hosting the [ssa_booking] shortcode, meaning any visitor who has viewed such a page can obtain it and target any appointment in the system without authentication.
CVSS v3.1
Score 5.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6937 is a missing authorization vulnerability (CWE-862) in the Simply Schedule Appointments Booking Plugin for WordPress. The plugin fails to verify user authorization when handling requests to the bulk appointments REST API endpoint. Due to a static public nonce embedded in pages with the [ssa_booking] shortcode, unauthenticated users can retrieve and modify arbitrary appointment data, including customer personally identifiable information, payment status, and meeting URLs. This vulnerability affects all plugin versions up to and including 1.6.11.8.
Potential Impact
An attacker without authentication can access and alter appointment records, exposing sensitive customer data such as PII and payment status, and potentially disrupt appointment integrity by modifying meeting URLs. This compromises confidentiality and integrity of appointment data but does not affect system availability. The CVSS score of 5.3 reflects a medium severity impact with network attack vector and no privileges required.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Until a patch is available, restrict access to pages hosting the [ssa_booking] shortcode and monitor for unauthorized API activity. Avoid exposing the booking shortcode on publicly accessible pages if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-04-23T19:11:14.213Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a180163e29bf47b50c595ae
Added to database: 5/28/2026, 8:48:35 AM
Last enriched: 5/28/2026, 9:04:12 AM
Last updated: 5/29/2026, 12:57:06 PM
Views: 16
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