Database disclosure via nonce bypass and SQL injection
Published Feb 19, 2026 · Updated Feb 19, 2026
SQL injection in Fernleaf Systems Limited Shield Security 21.0.8 and earlier allows remote attackers to read database data via forged requests. The isNonceVerifyRequired action override accepts a user-supplied false value, bypassing nonce checks, while the traffic-table offense filter enters SQL construction without strict parameterization. Exploitation requires an authenticated administrator to submit the forged request; the grounded consequence is database disclosure.
Summary
What happened
SQL injection in Fernleaf Systems Limited Shield Security 21.0.8 and earlier allows remote attackers to read database data via forged requests. The isNonceVerifyRequired action override accepts a user-supplied false value, bypassing nonce checks, while the traffic-table offense filter enters SQL construction without strict parameterization. Exploitation requires an authenticated administrator to submit the forged request; the grounded consequence is database disclosure.
The record
- CVE
- CVE-2026-0722
- Published
- Feb 19, 2026
- Updated
- Feb 19, 2026
- Vendor
- Fernleaf Systems Limited
- Product
- Shield Security
- Classifications
- CWE-89, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 19, 2026CVE publishedPublication date reported by the CVE source.
- Feb 19, 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=* <=21.0.8
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
- CleanTalk CSRF-to-SQL-injection proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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