CVE-2016-20070

MEDIUM

WordPress Booking Calendar Contact Form 1.0.23 Privilege Escalation Stored XSS

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-20070. PoCs published by i0akiN SEC-LABORATORY.

AI-analyzed exploit summary The exploit demonstrates unauthenticated blind SQL injection and stored XSS vulnerabilities in WordPress Booking Calendar Contact Form plugin <=v1.0.23. It includes detailed technical analysis, vulnerable function paths, and proof-of-concept payloads for SQLi and XSS attacks.

Description

WordPress Booking Calendar Contact Form 1.0.23 contains privilege escalation and stored cross-site scripting vulnerabilities that allow authenticated users to modify plugin options and inject malicious scripts by failing to verify user privileges and sanitize input parameters. Attackers with subscriber-level accounts can inject XSS payloads through parameters like price, name, calendar_language, and email_confirmation_to_user via admin-ajax.php and admin.php endpoints to execute arbitrary JavaScript in administrator browsers.

Exploits (1)

exploitdb WORKING POC
by i0akiN SEC-LABORATORY · textwebappsphp
https://www.exploit-db.com/exploits/39423

The exploit demonstrates unauthenticated blind SQL injection and stored XSS vulnerabilities in WordPress Booking Calendar Contact Form plugin <=v1.0.23. It includes detailed technical analysis, vulnerable function paths, and proof-of-concept payloads for SQLi and XSS attacks.

Classification
Working Poc 100%
Attack Type
Sqli | Xss
Complexity
Trivial
Reliability
Reliable
Target: WordPress Booking Calendar Contact Form <=v1.0.23
No auth needed
Prerequisites: WordPress installation with vulnerable plugin · Network access to the target
devstral-2 · analyzed Jun 15, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-39423
https://www.exploit-db.com/exploits/39423
Product product
Official Product Homepage
http://wordpress.dwbooster.com/
Third Party Advisory third-party-advisory
VulnCheck Advisory: WordPress Booking Calendar Contact Form 1.0.23 Privilege Escalation Stored XSS
https://www.vulncheck.com/advisories/wordpress-booking-calendar-contact-form-privilege-escalation-stored-xss

Scores

CVSS v3 6.4
EPSS 0.0023
EPSS Percentile 13.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
dwbooster/Booking Calendar Contact Form < 1.0.23
Published Jun 15, 2026
Tracked Since Jun 15, 2026