PT-2025-10061 · WordPress · Simply Schedule Appointments

Luciano Hanna · Published 2025-03-07 · Updated 2025-03-08 · CVE-2024-13431

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin versions up to, and including, 1.6.8.3

Description The issue is related to Reflected Cross-Site Scripting due to insufficient input sanitization and output escaping in the accent color and background parameters. This allows unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Recommendations For versions up to, and including, 1.6.8.3, update to a version that addresses the insufficient input sanitization and output escaping issue in the accent color and background parameters. As a temporary workaround, consider restricting user input for these parameters to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-13431

Affected Products

Simply Schedule Appointments

References · 13

• https://nvd.nist.gov/vuln/detail/CVE-2024-13431 · Security Note
• https://osv.dev/vulnerability/CVE-2024-13431 · Vendor Advisory
• https://plugins.trac.wordpress.org/changeset/3246760/simply-schedule-appointments/trunk/booking-app-new/iframe-inner.php · Patch
• https://twitter.com/CVEnew/status/1898246390976778315 · Twitter Post
• https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.8.3/includes/class-styles.php#L97 · Note
• https://t.me/cvetracker/18651 · Telegram Post
• https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/booking-app-new/iframe-inner.php#L189 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/f6e3e5dd-b9f1-4d24-98cc-b6ab319434e4?source=cve · Note
• https://twitter.com/VulmonFeeds/status/1898032801271746602 · Twitter Post
• https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.8.3/booking-app-new/iframe-inner.php#L182 · Note
• https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.8.3/includes/class-styles.php#L116 · Note
• https://blog.lucianohanna.com.br/security/cve/cve-2024-13431-reflected-xss-no-simply-schedule-appointments · Note
• https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/booking-app-new/iframe-inner.php#L182 · Note