CVE-2025-11723

Medium

Description

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6.9.5 via the hash() function due to use of a hardcoded fall-back salt. This makes it possible for unauthenticated attackers to generate a valid token across sites running the plugin that have not manually set a salt in the wp-config.php file and access booking information that will allow them to make modifications.

SeverityMedium
CVSS6.5
Exploit probability12. percentile0.2%
ProductAppointment Booking Calendar — Simply Schedule Appointments Booking Plugin
PublishedJan 6, 2026
First seenJan 6, 2026
Weakness typeCWE-330CWE-330

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Pluginv ≤ 1.6.9.5—

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