Smart Appointment & Booking <= 1.0.8 - Missing Authorization to Unauthenticated Arbitrary Booking Cancellation
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
The Smart Appointment & Booking plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check and a nonce validation logic flaw in the saab_cancel_booking() function in all versions up to, and including, 1.0.8. The nonce check uses && (AND) instead of || (OR), which means providing any value for the security parameter causes the entire check to be skipped. This makes it possible for unauthenticated attackers to cancel arbitrary bookings by supplying a predictable booking ID.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| zealopensource | Smart Appointment & Booking | up to 1.0.8 | — | No fix listed | CNA |
- Smart Appointment & Booking Vendorzealopensource Affected up to 1.0.8 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-5693
- 2026-10-03 Alias added: GHSA-jx49-jgx5-x37f
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/afc3531d-6134-4b45-b532-37430d96a8fb?source=cve
- https://plugins.trac.wordpress.org/browser/smart-appointment-booking/trunk/inc/front/class.saab.front.action.php#L2558
- https://plugins.trac.wordpress.org/browser/smart-appointment-booking/tags/1.0.8/inc/front/class.saab.front.action.php#L2558
- https://wordpress.org/plugins/smart-appointment-booking/
More zealopensource vulnerabilities
- TI-2022-02832 Generate PDF using Contact Form 7 < 3.6 - Admin+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 4.8
- TI-2024-25055 WordPress Generate PDF using Contact Form 7 plugin <= 4.1.2 - CSRF to Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-32867 WordPress Abandoned Contact Form 7 plugin <= 2.2 - Broken Access Control vulnerability CVSS 3.1HIGH 8.2
- TI-2024-05861 Generate PDF using Contact Form 7 <= 4.1.2 - Cross-Site Request Forgery to Arbitrary File Deletion CVSS 3.1HIGH 8.8
- TI-2024-05860 Generate PDF using Contact Form 7 <= 4.1.2 - Cross-Site Request Forgery to Arbitrary File Upload CVSS 3.1HIGH 8.8
- TI-2026-69930 Path traversal in Generate PDF using Contact Form 7 plugin CVSS 3.1HIGH 7.5
Sources
- CVE-2026-5693 · CVE Program
- CVE-2026-5693 · NVD
- FIRST EPSS
- GHSA-jx49-jgx5-x37f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences