CVE-2026-1719: Gravity Bookings Premium WordPress Plugin SQL Injection

Overview

A critical SQL injection vulnerability has been identified in the Gravity Bookings Premium plugin for WordPress. Tracked as CVE-2026-1719 with a CVSS score of 7.5 (High), the flaw affects all plugin versions up to and including 2.5.9 and can be exploited by unauthenticated attackers to extract or modify sensitive booking data.

Technical Details

The vulnerability stems from insufficient escaping of user-supplied parameters combined with a lack of prepared statements in existing SQL queries. An unauthenticated attacker can inject malicious SQL payloads through affected input parameters to manipulate database queries.

Root Cause

The plugin fails to:

1. Properly sanitize and escape user-controlled input before incorporating it into SQL queries
2. Use parameterized queries or prepared statements when interacting with the WordPress database layer

This is a classic OWASP A03:2021 Injection flaw. When user input reaches the $wpdb->query() or equivalent call without sanitization, an attacker can append arbitrary SQL to extract, modify, or delete database records.

Attack Scenario

An unauthenticated attacker can:

• Extract data: Read the contents of the WordPress database, including user credentials (hashed passwords), email addresses, booking details, and customer PII
• Modify bookings: Alter or delete existing booking records
• Escalate privileges: In some configurations, extract admin credentials and gain full WordPress admin access
• Lateral movement: Use extracted credentials for further attacks

Affected Component

The Gravity Bookings Premium plugin is a commercial WordPress plugin used by hotels, rental services, appointment-based businesses, and event organizers to manage online reservations. Its widespread deployment in customer-facing booking systems makes this vulnerability particularly impactful, as booking databases routinely contain:

• Full names and contact information
• Payment references
• Reservation history
• Potentially partial payment card data depending on integration

Remediation

Immediate Actions

1. Update the plugin to a patched version above 2.5.9 as soon as one becomes available from the plugin vendor
2. Temporarily disable the plugin if a patch is not yet available and the site is actively targeted
3. Review server logs for anomalous SQL error messages or unusual parameter values in request logs that may indicate prior exploitation

Mitigation (if update is unavailable)

• Deploy a Web Application Firewall (WAF) rule to block SQL injection patterns targeting plugin endpoints
• Restrict direct database access and ensure the WordPress database user has minimal necessary privileges (no FILE, DROP, or GRANT permissions)
• Enable query logging on the MySQL/MariaDB instance to detect exploitation attempts

WordPress Hardening

// Ensure all database queries use prepared statements
$results = $wpdb->get_results(
    $wpdb->prepare(
        "SELECT * FROM {$wpdb->prefix}bookings WHERE booking_id = %d",
        $user_input
    )
);

Developers should audit all $wpdb->query() calls where user input is interpolated directly into the query string.

Detection

Monitor for:

• Unusual UNION SELECT, OR 1=1, AND SLEEP(), or INFORMATION_SCHEMA patterns in web server access logs
• Elevated database query times or errors in WordPress debug logs
• Unexpected access to /wp-admin/ following anomalous booking-related requests
• WordPress file integrity alerts for newly created admin accounts

References

• NVD Entry: CVE-2026-1719
• OWASP SQL Injection Prevention Cheat Sheet
• WordPress Database Abstraction ($wpdb)