Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.8.3 - Reflected Cross-Site Scripting

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2024-13431
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-03-07 09:15:15 UTC
Updated2026-04-08 19:20:14 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 6.1 MEDIUM from [email protected]

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

EPSS: 0.012190000 probability, percentile 0.790500000 (date 2026-04-13)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1[email protected]Secondary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1CNADECLARED6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nsquared Appointment Booking Calendar All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Croixhaug Appointment Booking Calendar Simply Schedule Appointments Booking Plugin affected 1.6.8.3 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.8.3/includes/cl... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3246760/simply-schedule-appointments/trunk/booking-... [email protected] plugins.trac.wordpress.org Patch
www.wordfence.com/threat-intel/vulnerabilities/id/f6e3e5dd-b9f1-4d24-98cc-b6ab3... [email protected] www.wordfence.com Third Party Advisory
blog.lucianohanna.com.br/security/cve/cve-2024-13431-reflected-xss-no-simply-schedule-... [email protected] blog.lucianohanna.com.br
plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.8.3/booking-app... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.8.3/includes/cl... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Luciano Hanna (en)

Additional Advisory Data

SourceTimeEvent
CNA2025-03-06T20:14:46.000ZDisclosed
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