How severe is CVE-2025-4667?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Is CVE-2025-4667 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Croixhaug Appointment Booking Calendar — Simply Schedule Appointments Plugin

CVE-2025-4667

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's ssa_admin_upcoming_appointments, ssa_admin_upcoming_appointments, and ssa_pas…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (48.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Croixhaug Appointment Booking Calendar — Simply Schedule Appointments Plugin — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-4667?: CVE-2025-4667 is a medium-severity vulnerability in Croixhaug Appointment Booking Calendar — Simply Schedule Appointments Plugin, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-06-14.
How severe is CVE-2025-4667?: Medium severity. CVSS v3 base score is 6.4 out of 10.
Is CVE-2025-4667 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.