CVE-2026-5693: CWE-862 Missing Authorization in zealopensource Smart Appointment & Booking
The Smart Appointment & Booking WordPress plugin up to version 1.0.8 contains a vulnerability due to missing authorization checks and flawed nonce validation in the saab_cancel_booking() function. The nonce check incorrectly uses a logical AND instead of OR, allowing attackers to bypass security validation by supplying any value for the security parameter. This enables unauthenticated attackers to cancel arbitrary bookings by providing predictable booking IDs. The vulnerability has a medium severity with a CVSS score of 5.3 and does not impact confidentiality or availability but allows unauthorized modification of booking data.
AI Analysis
Technical Summary
CVE-2026-5693 is a missing authorization vulnerability (CWE-862) in the Smart Appointment & Booking WordPress plugin by zealopensource. The flaw resides in the saab_cancel_booking() function where the nonce validation logic uses a logical AND (&&) instead of OR (||), causing the nonce check to be bypassed if any security parameter is present. This allows unauthenticated attackers to cancel arbitrary bookings by supplying predictable booking IDs, leading to unauthorized modification of booking data. The vulnerability affects all versions up to and including 1.0.8. No official patch or remediation guidance is currently available from the vendor.
Potential Impact
The vulnerability allows unauthenticated attackers to cancel bookings without proper authorization, resulting in unauthorized modification of booking data. There is no impact on confidentiality or availability, but the integrity of booking records can be compromised. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider disabling the booking cancellation functionality or restricting access to trusted users only. Monitor official vendor channels for updates and apply patches promptly once released.
CVE-2026-5693: CWE-862 Missing Authorization in zealopensource Smart Appointment & Booking
Description
The Smart Appointment & Booking WordPress plugin up to version 1.0.8 contains a vulnerability due to missing authorization checks and flawed nonce validation in the saab_cancel_booking() function. The nonce check incorrectly uses a logical AND instead of OR, allowing attackers to bypass security validation by supplying any value for the security parameter. This enables unauthenticated attackers to cancel arbitrary bookings by providing predictable booking IDs. The vulnerability has a medium severity with a CVSS score of 5.3 and does not impact confidentiality or availability but allows unauthorized modification of booking data.
CVSS v3.1
Score 5.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-5693 is a missing authorization vulnerability (CWE-862) in the Smart Appointment & Booking WordPress plugin by zealopensource. The flaw resides in the saab_cancel_booking() function where the nonce validation logic uses a logical AND (&&) instead of OR (||), causing the nonce check to be bypassed if any security parameter is present. This allows unauthenticated attackers to cancel arbitrary bookings by supplying predictable booking IDs, leading to unauthorized modification of booking data. The vulnerability affects all versions up to and including 1.0.8. No official patch or remediation guidance is currently available from the vendor.
Potential Impact
The vulnerability allows unauthenticated attackers to cancel bookings without proper authorization, resulting in unauthorized modification of booking data. There is no impact on confidentiality or availability, but the integrity of booking records can be compromised. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider disabling the booking cancellation functionality or restricting access to trusted users only. Monitor official vendor channels for updates and apply patches promptly once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-04-06T11:20:41.603Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a02e30ccbff5d8610bad42f
Added to database: 05/12/2026, 08:21:32 UTC
Last enriched: 05/19/2026, 11:06:15 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 65
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