CVE-2026-39493Network attack vector

Unauthenticated database disclosure via unprepared SQL query

Published Jun 15, 2026 · Updated Jun 15, 2026

SQL injection in N Squared Digital Simply Schedule Appointments 1.6.9.27 and earlier allows remote attackers to read database data. An unspecified plugin query accepts insufficiently escaped user input without adequate preparation, allowing injected SQL to extend the existing statement. No authentication or user interaction is required; published impact is database disclosure and limited service interruption, while the affected parameter and code locus remain undisclosed.

CVSS severity9.3
Critical
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in N Squared Digital Simply Schedule Appointments 1.6.9.27 and earlier allows remote attackers to read database data. An unspecified plugin query accepts insufficiently escaped user input without adequate preparation, allowing injected SQL to extend the existing statement. No authentication or user interaction is required; published impact is database disclosure and limited service interruption, while the affected parameter and code locus remain undisclosed.

The record

CVE
CVE-2026-39493
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
N Squared Digital, LLC
Product
Simply Schedule Appointments
Classifications
CWE-89, CAPEC-7, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=1.6.9.27 changes=[{"at":"1.6.9.29","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

N Squared Digital, LLC · Simply Schedule Appointmentsversion=n/a <=1.6.9.27 changes=[{"at":"1.6.9.29","status":"unaffected"}]

Published CVSS scores

9.3Patchstack CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CAPEC-7Blind SQL Injection
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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