CVE-2024-13431 json
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.8.3 - Reflected Cross-Site Scripting
published 2025-03-07 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-6403
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the accent_color and background parameter in all versions up to, and including, 1.6.8.3 due to insufficient input sanitization and output escaping. This makes it possible for 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.
Patch / fix
- nsqua simply_schedule_appointments 1.6.8.5
- nsquared appointment_booking_calendar 1.6.8.5
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 20 mo ago
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
plugins.trac.wordpress.org
/changeset/3246760/simply-schedule-appointments/trunk/booking-app-new/iframe-inner.php
patch
-
wordfence.com
/threat-intel/vulnerabilities/id/f6e3e5dd-b9f1-4d24-98cc-b6ab319434e4?source=cve
third-party-advisory
- plugins.trac.wordpress.org /browser/simply-schedule-appointments/tags/1.6.8.3/booking-app-new/iframe-inner.php#L182
- plugins.trac.wordpress.org /browser/simply-schedule-appointments/tags/1.6.8.3/includes/class-styles.php#L97
- plugins.trac.wordpress.org /browser/simply-schedule-appointments/tags/1.6.8.3/includes/class-styles.php#L116
- blog.lucianohanna.com.br /security/cve/cve-2024-13431-reflected-xss-no-simply-schedule-appointments/
Sources
- CVE List CVE-2024-13431
- NVD CVE-2024-13431
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.