Unauthenticated database disclosure via unprepared query parameters
Published Jan 14, 2026 · Updated Jan 14, 2026
Blind SQL injection in Simply Schedule Appointments 1.6.9.9 and earlier allows remote attackers to read sensitive database data. The plugin's query-building path accepts the order and append_where_sql parameters and inserts insufficiently escaped values into existing SQL without sufficient preparation. No authentication or user interaction is required; the blind channel exposes database contents without reported data modification or service interruption.
Summary
What happened
Blind SQL injection in Simply Schedule Appointments 1.6.9.9 and earlier allows remote attackers to read sensitive database data. The plugin's query-building path accepts the order and append_where_sql parameters and inserts insufficiently escaped values into existing SQL without sufficient preparation. No authentication or user interaction is required; the blind channel exposes database contents without reported data modification or service interruption.
The record
- CVE
- CVE-2025-12166
- Published
- Jan 14, 2026
- Updated
- Jan 14, 2026
- Vendor
- N Squared Digital, LLC
- Product
- Simply Schedule Appointments
- Classifications
- CWE-89, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 14, 2026CVE publishedPublication date reported by the CVE source.
- Jan 14, 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.
- Affected versionversion=* <=1.6.9.9
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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