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CVE-2026-34565

CRITICAL CVSS 3.1: 9.0 EPSS 0.04%
Updated Apr 06, 2026
Ci4-Cms-Erp
Parameter Value
CVSS 9.0 (CRITICAL)
Affected Versions before 0.31.0.0
Fixed In 0.31.0.0
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Ci4-Cms-Erp
Public PoC No

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 when adding Posts to navigation menus through the Menu Management functionality. Post-related data selected via the Posts section is stored server-side and rendered without proper output encoding.

These stored values are later rendered unsafely within administrative dashboards and public-facing navigation menus, resulting in stored DOM-based cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Ci4-Cms-Erp Ci4ms
cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*
0.31.0.0