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CVE-2016-20068: WordPress Booking Calendar Contact Form 1.0.23 SQL Injection

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-15 · updated 2026-06-17
• Weakness: CWE-89

Description

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.

Affected products

• dwbooster Booking Calendar Contact Form: through 1.0.23

References

• http://wordpress.dwbooster.com/
• https://www.exploit-db.com/exploits/39423
• https://www.vulncheck.com/advisories/wordpress-booking-calendar-contact-form-sql-injection

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