High severity · published Jun 15, 2026
CVE-2016-20068
WordPress Booking Calendar Contact Form 1.0.23 SQL Injection
8.2
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BC
Booking Calendar Contact Form · dwbooster
through 1.0.23 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-20068
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-20068
wordpress.dwbooster.com
http://wordpress.dwbooster.com/
www.exploit-db.com
https://www.exploit-db.com/exploits/39423
www.vulncheck.com
https://www.vulncheck.com/advisories/wordpress-booking-calendar-contact-form-sql-injection
More from Booking Calendar Contact Form
8.2
CVE-2016-20069
WordPress Booking Calendar Contact Form 1.0.23 SQL Injection
6.4
CVE-2016-20070
WordPress Booking Calendar Contact Form 1.0.23 Privilege Escalation Stored XSS