XSS in Creavi Appointment Booking Calendar
CVE-2026-1856
The Appointment Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom booking field labels in all versions up to, and including, 1.4.4 due to insufficient input sanitization and output escaping. This…
Vulnerability class: XSS (Cross-Site Scripting)
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.
Affected products
- Creavi Appointment Booking Calendar — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-1856?
- CVE-2026-1856 is a medium-severity vulnerability in Creavi Appointment Booking Calendar, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-06-19.
- How severe is CVE-2026-1856?
- Medium severity. CVSS v3 base score is 6.4 out of 10.