CVE-2026-2183
Published: 08 February 2026
Summary
CVE-2026-2183 is a medium-severity Improper Access Control (CWE-284) vulnerability in Greatdevelopers Certificate. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 14.0th 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 CM-7 (Least Functionality) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2026-2183 is an unrestricted file upload vulnerability (CWE-284, CWE-434) in the Great Developers Certificate Generation System up to commit 97171bb0e5e22e52eacf4e4fa81773e5f3cffb73. The issue affects an unknown part of the file /restructured/csv.php. The software follows a rolling release approach for continuous delivery, so no specific version details are available for affected or updated releases, and the project's code repository has not been active for many years.
The vulnerability carries a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L), indicating remote network access with low attack complexity, requiring low privileges but no user interaction, and resulting in low impacts to confidentiality, integrity, and availability. Low-privileged remote attackers can exploit it by manipulating the affected component to perform unrestricted uploads.
Advisories referenced in VULDB entries and a GitHub CVE discovery note provide details on the issue but do not specify patches or mitigations, consistent with the project's inactive repository and lack of versioned releases.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-5767
Vulnerability details
A security vulnerability has been detected in Great Developers Certificate Generation System up to 97171bb0e5e22e52eacf4e4fa81773e5f3cffb73. This affects an unknown part of the file /restructured/csv.php. The manipulation leads to unrestricted upload. Remote exploitation of the attack is possible. This product follows…
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a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. The code repository of the project has not been active for many years.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload in a public-facing web app directly enables remote exploitation (T1190) to deploy a web shell (T1505.003) and transfer additional tools/payloads (T1105).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly blocks the unrestricted file upload in /restructured/csv.php by requiring validation of file type, content, and size before acceptance.
Enforces least functionality by disabling or restricting the upload capability in csv.php that enables the vulnerability.
Scans or filters uploaded files for malicious content, mitigating the impact of successful unrestricted uploads.