Database disclosure via concatenated username SQL queries
Published Feb 25, 2026 · Updated Feb 25, 2026
SQL injection in z-9527 admin 1.0 and 2.0 allows remote attackers to infer database contents through unauthenticated HTTP requests. The checkName and register paths in server/controller/user.js interpolate the username parameter directly into SELECT and INSERT statements without parameterization. No authentication is required; time-based predicates at /user/checkName and /user/register expose database values through response delays.
Summary
What happened
SQL injection in z-9527 admin 1.0 and 2.0 allows remote attackers to infer database contents through unauthenticated HTTP requests. The checkName and register paths in server/controller/user.js interpolate the username parameter directly into SELECT and INSERT statements without parameterization. No authentication is required; time-based predicates at /user/checkName and /user/register expose database values through response delays.
The record
- CVE
- CVE-2026-3200
- Published
- Feb 25, 2026
- Updated
- Feb 25, 2026
- Vendor
- z-9527
- Product
- admin
- Classifications
- CWE-74, CWE-89, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 25, 2026CVE publishedPublication date reported by the CVE source.
- Feb 25, 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=1.0
- Affected versionversion=2.0
What conditions does exploitation require?
What is affected?
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
- register time-based blind SQL injection proof of conceptproof of concept · demonstrated
- checkName time-based blind SQL injection proof of conceptproof of concept · demonstrated
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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