CVE-2016-20069 WordPress Booking Calendar Contact Form 1.0.23 SQL Injection
Unauthenticated attackers can exploit SQL injection in the calendar shortcode to extract sensitive database information from WordPress sites using this 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-2016-20069?
CVE-2016-20069 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 1.0.23 contains an unauthenticated blind SQL injection vulnerability in the shortcode function that fails to sanitize the calendar parameter before using it in database queries. Attackers can inject SQL commands through the calendar shortcode parameter to execute arbitrary SQL queries and extract sensitive database information.
Weakness: CWE-89
Which versions are affected by CVE-2016-20069?
How do I fix CVE-2016-20069?
No fix has been published for CVE-2016-20069 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-2016-20069 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20069 exists.
Sources
Also known as GHSA-7mqg-hw4x-hr9x.