CVE-2026-1688
Published: 30 January 2026
Summary
CVE-2026-1688 is a medium-severity Injection (CWE-74) vulnerability in Clive 21 Directory Management System. Its CVSS base score is 6.9 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 24.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2026-1688 is a SQL injection vulnerability (CWE-74, CWE-89) in the itsourcecode Directory Management System version 1.0. The flaw resides in an unknown function within the file /admin/index.php, where manipulation of the Username argument triggers the injection. Published on 2026-01-30, it carries a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L), indicating high severity due to its network accessibility and ease of exploitation.
Unauthenticated remote attackers can exploit this vulnerability by sending crafted requests targeting the Username parameter, with low attack complexity and no user interaction required. Successful exploitation enables limited impacts on confidentiality, integrity, and availability, such as unauthorized data access, modification, or disruption within the application's database.
VulDB advisories (vuldb.com/?ctiid.343482, vuldb.com/?id.343482, vuldb.com/?submit.741283) document the issue, alongside a public exploit disclosure in a GitHub repository (github.com/jackhong1236/CVE_1/issues/1). No specific patches or mitigations are detailed in available references, though the vendor site (itsourcecode.com) is linked for potential updates.
The exploit has been publicly disclosed and may be actively used, increasing the risk for unpatched Directory Management System 1.0 deployments.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-5021
Vulnerability details
A security vulnerability has been detected in itsourcecode Directory Management System 1.0. The affected element is an unknown function of the file /admin/index.php. The manipulation of the argument Username leads to sql injection. The attack can be initiated remotely. The…
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exploit has been disclosed publicly and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct unauthenticated remote exploitation of a public-facing web application via SQL injection in /admin/index.php.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires validation and sanitization of the Username input in /admin/index.php to block crafted SQL payloads before they reach the database.
Mandates timely remediation of the known SQL injection flaw in Directory Management System 1.0 once a patch or update is issued by the vendor.
Enables continuous monitoring and anomaly detection on web requests to /admin/index.php that exhibit SQL injection patterns against the Username parameter.