CVE-2026-0566
Published: 02 January 2026
Summary
CVE-2026-0566 is a medium-severity Improper Access Control (CWE-284) vulnerability in Code-Projects Content Management System. Its CVSS base score is 4.7 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 22.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control enforces ownership-based restrictions on portable storage device use, directly implementing access control over media insertion into organizational systems.
Hardware write-protect enforces access control on critical resources (e.g., firmware) independent of software state.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.
By automatically labeling outputs with security attributes, the control supports attribute-based enforcement and reduces exploitability of improper access control weaknesses.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload in a web CMS directly enables web shell deployment (T1100/T1505.003) via exploitation of a public-facing application (T1190).
NVD Description
A security vulnerability has been detected in code-projects Content Management System 1.0. Impacted is an unknown function of the file /admin/edit_posts.php. The manipulation of the argument image leads to unrestricted upload. The attack is possible to be carried out remotely.…
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The exploit has been disclosed publicly and may be used.
Deeper analysisAI
CVE-2026-0566 is a security vulnerability in code-projects Content Management System version 1.0, affecting an unknown function within the file /admin/edit_posts.php. The issue enables unrestricted file upload through manipulation of the "image" argument, as identified by CWEs-284 (Improper Access Control) and CWE-434 (Unrestricted Upload of File with Dangerous Type). It carries a CVSS v3.1 base score of 4.7 (AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L) and was published on 2026-01-02.
The vulnerability can be exploited remotely by an attacker with high privileges over the network with low attack complexity and no user interaction required. Successful exploitation allows limited impacts on confidentiality, integrity, and availability, potentially enabling malicious file uploads that could lead to further compromise depending on the uploaded content.
Advisories and additional details are documented on VulDB (ctiid.339378, id.339378, submit.729228), a GitHub issue at github.com/Limingqian123/CVE/issues/13, and code-projects.org. The exploit has been publicly disclosed and may be used by attackers.
Details
- CWE(s)