Cyber Resilience

CVE-2026-5828

Medium

Published: 09 April 2026

Published
09 April 2026
Modified
24 April 2026
KEV Added
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Patch
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CVSS Score v4 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0001 2.6th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-5828 is a medium-severity Injection (CWE-74) vulnerability in Code Projects (inferred from references). 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 2.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-5828 is a SQL injection vulnerability affecting code-projects Simple IT Discussion Forum version 1.0. The flaw exists in an unknown function within the file /functions/addcomment.php, where manipulation of the postid argument enables SQL code injection. It is classified under CWE-74 and CWE-89, with 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).

The vulnerability is exploitable remotely by unauthenticated attackers requiring low attack complexity and no user interaction. Exploitation via the postid parameter in addcomment.php allows attackers to inject malicious SQL, potentially resulting in limited impacts to confidentiality, integrity, and availability.

Advisories and additional details are documented in references such as VulDB entries (vuln/356275 and related CTI/submit pages), a GitHub issue at lonelyuan/vunls/issues/7, and the code-projects.org site. The exploit has been made public and could be used.

EU & UK References

Vulnerability details

A vulnerability was found in code-projects Simple IT Discussion Forum 1.0. The affected element is an unknown function of the file /functions/addcomment.php. The manipulation of the argument postid results in sql injection. The attack may be launched remotely. The exploit…

more

has been made public and could be used.

CWE(s)
CWE-74CWE-89

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

SQL injection in public-facing web app (addcomment.php) enables remote unauthenticated exploitation of internet-facing application for initial access.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

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CVE-2026-0597Shared CWE-74, CWE-89
CVE-2026-1688Shared CWE-74, CWE-89
CVE-2026-5018Shared CWE-74, CWE-89

Affected Assets

Code Projects
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Requires validation of the postid parameter in addcomment.php to block malicious SQL injection payloads.

SI-2 Flaw Remediation good match
prevent

Mandates timely patching or remediation of the SQL injection flaw in the Simple IT Discussion Forum application.

SI-9 Information Input Restrictions good match
prevent

Restricts postid inputs to valid formats such as integers, preventing SQL injection via malformed arguments.

References