PT-2026-1398 · WordPress · Simply Schedule Appointments Booking Plugin

Lucas Montes · Published 2026-01-06 · Updated 2026-01-08 · CVE-2025-11723

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Simply Schedule Appointments Booking Plugin versions prior to 1.6.9.6

Description The Appointment Booking Calendar – Simply Schedule Appointments Booking Plugin for WordPress is susceptible to sensitive information exposure due to the use of a hardcoded fall-back salt within the hash() function. This allows unauthenticated attackers to generate a valid token on sites utilizing the plugin that haven’t manually configured a salt in the wp-config.php file. Successful exploitation enables access to booking information, potentially allowing attackers to make modifications.

Recommendations Update the Simply Schedule Appointments Booking Plugin to version 1.6.9.6 or later. Manually set a salt in the wp-config.php file to prevent the use of the hardcoded fall-back salt.

Fix

Use of Insufficiently Random Values

Weakness Enumeration

CWE-330

Related Identifiers

CVE-2025-11723

Affected Products

Simply Schedule Appointments Booking Plugin

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-11723 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/a5f3fbd2-6152-4a89-8fe9-982120d1a640?source=cve · Note
• https://twitter.com/VulmonFeeds/status/2008535508117266881 · Twitter Post
• https://t.me/CVEtracker/41456 · Telegram Post
• https://plugins.trac.wordpress.org/changeset/3393919 · Note
• https://twitter.com/NiRoXoRiN/status/2009253953620357468 · Twitter Post