CVE-2026-1856
Medium
Description
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 makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
SeverityMedium
CVSS6.4
Exploit probability—
ProductCreavi Appointment Booking Calendar
PublishedJun 19, 2026
First seenJun 19, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| creavi Creavi Appointment Booking Calendar | v ≤ 1.4.4 | — |
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