CVE-2026-39447highobserved exploitationCWE-79

CVE-2026-39447: high-severity vulnerability in NSquared Simply Schedule Appointments

WordPress Simply Schedule Appointments plugin <= 1.6.10.6 - Cross Site Scripting (XSS) vulnerability

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43Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck.

ssvc Actcvss 7.1epss 0.2%
from disclosure to weapon
Published on NVDJun 15
VulnCheck+120d
Unauthenticated Cross Site Scripting (XSS) in Simply Schedule Appointments <= 1.6.10.6 versions.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Affected products
NSquared · Simply Schedule Appointments
Related CVEs — NSquared Simply Schedule Appointments

In the same product, most dangerous first.

CVE-2026-65508CRITICALWordPress Simply Schedule Appointments plugin <= 1.6.12.10 - SQL Injection vulnerabilityEPSS 0.4%CVE-2026-39493CRITICALWordPress Simply Schedule Appointments plugin <= 1.6.9.27 - SQL Injection vulnerabilityEPSS 0.4%CVE-2026-57812MEDIUMWordPress Simply Schedule Appointments plugin <= 1.6.12.4 - Broken Access Control vulnerabilityEPSS 0.3%CVE-2026-42384HIGHWordPress Simply Schedule Appointments plugin < 1.6.11.2 - Sensitive Data Exposure vulnerabilityEPSS 0.3%CVE-2026-59523MEDIUMWordPress Simply Schedule Appointments plugin <= 1.6.11.11 - Broken Access Control vulnerabilityEPSS 0.3%CVE-2026-39495HIGHWordPress Simply Schedule Appointments plugin <= 1.6.9.27 - SQL Injection vulnerabilityEPSS 0.3%