CVE-2026-34566

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, the application fails to properly sanitize user-controlled input within the Page Management functionality when creating or editing pages. Multiple input fields accept attacker-controlled JavaScript payloads that are stored server-side. These stored values are later rendered without proper output encoding across administrative page lists and public-facing page views, leading to stored DOM-based cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 5.3

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0	Release Notes
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-458r-h248-29c5	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*

History

06 Apr 2026, 16:42

Type	Values Removed	Values Added
First Time		Ci4-cms-erp Ci4-cms-erp ci4ms
CPE		cpe:2.3:a:ci4-cms-erp:ci4ms::::::::
References	~~() https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0 -~~	() https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0 - Release Notes
References	~~() https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-458r-h248-29c5 -~~	() https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-458r-h248-29c5 - Exploit, Vendor Advisory

01 Apr 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-01 22:16

Updated : 2026-04-06 16:42

NVD link : CVE-2026-34566

Mitre link : CVE-2026-34566

CVE.ORG link : CVE-2026-34566

JSON object : View

Products Affected

ci4-cms-erp

ci4ms

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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