CVE-2016-20068: Security Advisory

CVE: CVE-2016-20068 CVSS 8.2

CVE-2016-20068 is a high-severity vulnerability (CVSS 8.2).

Summary

WordPress Booking Calendar Contact Form version 1.0.23 contains an unauthenticated blind SQL injection vulnerability that allows remote attackers to execute arbitrary SQL queries by injecting malicious code through the ‘id’ parameter. Attackers can send requests to the admin-ajax.php endpoint with the action parameter set to ‘dex_bccf_calendar_ajaxevent’ and supply crafted SQL commands in the ‘id’ parameter to extract sensitive database information.

Remediation

Apply the vendor’s update during your next patch window and verify exposure. Patch-management tools that can deploy and verify the fix include Action1, Automox, ManageEngine Patch Manager Plus, ManageEngine Endpoint Central. See our best patch management ranking.

Sources

Data as of June 16, 2026. Sources: nvd.nist.gov, wordpress.dwbooster.com, exploit-db.com, vulncheck.com. Figures are pulled from public vendor and security data and refreshed automatically.