Critical severity · published Jun 15, 2026
CVE-2026-39493
WordPress Simply Schedule Appointments plugin <= 1.6.9.27 - SQL Injection vulnerability
9.3
CVSS
0.4%
EPSS
No
On KEV
Description
Unauthenticated SQL Injection in Simply Schedule Appointments <= 1.6.9.27 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
Simply Schedule Appointments · NSquared
through 1.6.9.27 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-39493
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-39493
patchstack.com
https://patchstack.com/database/wordpress/plugin/simply-schedule-appointments/vulnerability/wordpress-simply-schedule-appointments-plugin-1-6-9-27-sql-injection-vulnerability-2?_s_id=cve
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