CVE-2016-20070 - CVE House
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Status published Medium CVE-2016-20070

WordPress Booking Calendar Contact Form 1.0.23 Privilege Escalation Stored XSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Joaquin Ramirez Martinez [ i0 SEC-LABORATORY ]

Affected Vendor

Affected Software

Booking Calendar Contact Form
Vulnerable Versions:
0

Timeline

Official Publish: June 15th, 2026
Last Modified: July 15th, 2026
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weaknesses (CWE)