CVE-2026-39493criticalCWE-89

CVE-2026-39493: critical vulnerability in NSquared Simply Schedule Appointments

WordPress Simply Schedule Appointments plugin <= 1.6.9.27 - SQL Injection vulnerability

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.3epss 0.4%
Unauthenticated SQL Injection in Simply Schedule Appointments <= 1.6.9.27 versions.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/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-2026-57812MEDIUMWordPress 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%CVE-2026-65513HIGHWordPress Simply Schedule Appointments plugin <= 1.6.12.10 - Cross Site Scripting (XSS) vulnerabilityEPSS 0.3%