CVE-2016-20070

WordPress Booking Calendar Contact Form 1.0.23 Privilege Escalation Stored XSS

Published Jun 15, 2026 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Codepeople
Codepeople booking Calendar Contact Form
CPEs cpe:2.3:a:codepeople:booking_calendar_contact_form:*:*:*:*:*:wordpress:*:*
Vendors & Products Codepeople
Codepeople booking Calendar Contact Form
Type Values Removed Values Added
First Time appeared Dwbooster
Dwbooster booking Calendar Contact Form
Wordpress
Wordpress wordpress
Vendors & Products Dwbooster
Dwbooster booking Calendar Contact Form
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title WordPress Booking Calendar Contact Form 1.0.23 Privilege Escalation Stored XSS
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 15, 2026, 1:23 AM
Reserved
Jun 14, 2026, 6:28 PM
Status
Deferred
Published
Jun 15, 2026, 2:16 PM
Modified
Jun 17, 2026, 12:43 AM