
Hydra Booking — Appointment Scheduling & Booking Calendar Security & Risk Analysis
wordpress.org/plugins/hydra-bookingA complete appointment scheduling and booking calendar for WordPress — integrates with WooCommerce, Google Calendar, Zoom, and more.
Is Hydra Booking — Appointment Scheduling & Booking Calendar Safe to Use in 2026?
Generally Safe
Score 86/100Hydra Booking — Appointment Scheduling & Booking Calendar has a strong security track record. Known vulnerabilities have been patched promptly.
The "hydra-booking" plugin v1.1.40 presents a mixed security posture. While it demonstrates good practices in areas like prepared statement usage for SQL queries (79%) and output escaping (95%), significant concerns remain. The presence of 18 AJAX handlers, with 3 lacking authorization checks, opens a substantial attack surface. Furthermore, the taint analysis revealed one high-severity flow with unsanitized paths, indicating potential for unauthorized data access or modification. The plugin's history of 8 known CVEs, including a past critical and high severity vulnerability, despite no currently unpatched issues, suggests a recurring pattern of security weaknesses. The types of past vulnerabilities, such as Improper Privilege Management and SQL Injection, align with the observed lack of authorization checks and potential for taint flow issues. The last vulnerability in 2026 is also concerning for a plugin of this version.
Key Concerns
- AJAX handlers without auth checks
- High severity taint flow
- Previous critical CVEs
- Previous high severity CVEs
- Dangerous functions (unserialize)
- Unsanitized paths in taint analysis
Hydra Booking — Appointment Scheduling & Booking Calendar Security Vulnerabilities
CVEs by Year
Severity Breakdown
8 total CVEs
Hydra Booking <= 1.1.32 - Unauthenticated Privilege Escalation
Hydra Booking <= 1.1.32 - Authenticated (Custom role+) SQL Injection
Hydra Booking – All in One Appointment Booking System | Appointment Scheduling, Booking Calendar & WooCommerce Bookings <= 1.1.27 - Missing Payment Verification to Unauthenticated Payment Bypass
Hydra Booking – All in One Appointment Booking System | Appointment Scheduling, Booking Calendar & WooCommerce Bookings <= 1.1.27 - Unauthenticated Arbitrary Booking Cancellation via Weak Hash Generation
Hydra Booking 1.1.0 - 1.1.18 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via tfhb_reset_password_callback Function
Hydra Booking <= 1.1.10 - Authenticated (Subscriber+) SQL Injection
Hydra Booking <= 1.1.9 - Missing Authorization
Hydra Booking <= 1.1.10 - Authenticated (Contributor+) SQL Injection
Hydra Booking — Appointment Scheduling & Booking Calendar Code Analysis
Dangerous Functions Found
Bundled Libraries
SQL Query Safety
Output Escaping
Data Flow Analysis
Hydra Booking — Appointment Scheduling & Booking Calendar Attack Surface
AJAX Handlers 18
REST API Routes 87
Shortcodes 6
WordPress Hooks 76
Scheduled Events 5
Maintenance & Trust
Hydra Booking — Appointment Scheduling & Booking Calendar Maintenance & Trust
Maintenance Signals
Community Trust
Hydra Booking — Appointment Scheduling & Booking Calendar Alternatives
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Talika
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Hydra Booking — Appointment Scheduling & Booking Calendar Developer Profile
11 plugins · 97K total installs
How We Detect Hydra Booking — Appointment Scheduling & Booking Calendar
Patterns used to identify this plugin on WordPress sites during automated security audits and web crawling.
Asset Fingerprints
/wp-content/plugins/hydra-booking/assets/admin/css/tfhb-admin-style.css/wp-content/plugins/hydra-booking/build/assets/tfhb-admin-app.css/wp-content/plugins/hydra-booking/build/assets/tfhb-admin-app-script.js/wp-content/plugins/hydra-booking/assets/app/js/widget.js/wp-content/plugins/hydra-booking/assets/admin/js/main.jshydra-booking/assets/admin/js/main.js?ver=hydra-booking/assets/admin/css/tfhb-admin-style.css?ver=hydra-booking/build/assets/tfhb-admin-app.css?ver=hydra-booking/build/assets/tfhb-admin-app-script.js?ver=hydra-booking/assets/app/js/widget.js?ver=HTML / DOM Fingerprints
tfhb-admin-styletfhb_core_appstfhb_admin_noticetfhb_core_apps/wp-json/hydra-booking/