CVE-2026-1856

MediumCVSS 6.4/10Last modified Jun 22, 2026

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.

Metrics

CVSS 3.1 6.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published: Jun 19, 2026
Last modified: Jun 22, 2026
NVD status: Deferred

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