CVE-2016-20068 WordPress Booking Calendar Contact Form 1.0.23 SQL Injection
Unauthenticated attackers can execute arbitrary SQL queries via the 'id' parameter to extract sensitive database information from the Booking Calendar Contact Form plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-20068?
CVE-2016-20068 is a high-severity SQL injection vulnerability in dwbooster Booking Calendar Contact Form, published on 15 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-89
Which versions are affected by CVE-2016-20068?
How do I fix CVE-2016-20068?
No fix has been published for CVE-2016-20068 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2016-20068 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20068 exists.
Sources
Also known as GHSA-6pm2-2464-mj8p.