XSS in Dwbooster Booking Calendar Contact Form
CVE-2016-20070
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Dwbooster Booking Calendar Contact Form — versions 0
Weakness classification (CWE)
References
- Official Product Homepage (product)
- ExploitDB-39423 (exploit)
- VulnCheck Advisory: WordPress Booking Calendar Contact Form 1.0.23 Privilege Escalation Stored XSS (third-party-advisory)
Frequently asked questions
- What is CVE-2016-20070?
- CVE-2016-20070 is a medium-severity vulnerability in Dwbooster Booking Calendar Contact Form, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-06-15.
- How severe is CVE-2016-20070?
- Medium severity. CVSS v3 base score is 6.4 out of 10.