WordPress plugin
WP Booking System – Booking Calendar security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 17 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical2
- High3
- Medium12
- Low0
All WP Booking System – Booking Calendar vulnerabilities
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.1.0.6Update to 2.1.0.7
- Critical9.1Missing Authorization to Unauthenticated Arbitrary Calendar Note Deletion via wpbs_calendar_remove_note AJAX Action
≤2.1.0.5Update to 2.1.0.6
- Medium6.1Reflected Cross-Site Scripting
≤2.1.0.2Update to 2.1.0.3
- Medium6.8Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'user_permission' Parameter via Cross-Form Nonce Reuse
≤2.1.0.3Update to 2.1.0.4
- Medium6.5Missing Authorization to Authenticated (Subscriber+) Sensitive Information Exposure via wpbs_refresh_calendar_editor AJAX action
≤2.1.0.3Update to 2.1.0.4
- High7.5Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'wpbs_action=email_logs' Action
≤2.1.0.3Update to 2.1.0.4
- Medium4.9Authenticated (Administrator+) SQL Injection via 'orderby' Parameter
≤2.1.0.1Update to 2.1.0.2
- High7.2Unauthenticated Stored Cross-Site Scripting
<2.1.0.1Update to 2.1.0.1
- Medium6.5Authenticated (Subscriber+) SQL Injection via 'current_month' Parameter
≤2.1.0.1Update to 2.1.0.2
- Medium5.3Unauthenticated Information Exposure
≤2.0.19.12Update to 2.0.19.13
- Medium4.3Missing Authorization via wpbs_refresh_calendar_editor
≤2.0.19.10Update to 2.0.19.11
- Medium6.1Reflected Cross-Site Scripting
≤2.0.19.8Update to 2.0.19.9
- Medium4.3Missing Authorization
≤2.0.19.2Update to 2.0.19.3
- Medium4.4Authenticated (Admin+) Stored Cross Site Scripting
≤2.0.18Update to 2.0.18.1
- Medium6.1Reflected Cross-Site Scripting
<2.0.15Update to 2.0.15
- Critical9.8Cross-Site Request Forgery
<1.5.2Update to 1.5.2
- Medium6.1Cross-Site Scripting
<1.4Update to 1.4
WP Booking System – Booking Calendar: common questions
Does WP Booking System – Booking Calendar have known vulnerabilities?
Yes. VulnCrest Radar lists 17 known vulnerabilities in WP Booking System – Booking Calendar: 2 critical, 3 high, 12 medium. None are known to affect version null.
How do I check which version of WP Booking System – Booking Calendar I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent WP Booking System – Booking Calendar vulnerability?
CVE-2026-57639, published Nov 2, 2026: WP Booking System – Booking Calendar <= 2.1.0.6 - Unauthenticated Stored Cross-Site Scripting. Severity: High (CVSS 7.2).
Is any WP Booking System – Booking Calendar vulnerability listed in CISA KEV?
No. None of the known WP Booking System – Booking Calendar vulnerabilities is currently listed in the CISA KEV catalog.