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CVE-2026-27599

HIGH CVSS 3.1: 7.2 EPSS 0.02%
Updated Apr 06, 2026
Ci4-Cms-Erp
Parameter Value
CVSS 7.2 (HIGH)
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 within System Settings – Mail Settings. Several configuration fields, including Mail Server, Mail Port, Email Address, Email Password, Mail Protocol, and TLS settings, accept attacker-controlled input that is stored server-side and later rendered without proper output encoding.

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
High
Admin privileges needed
User Interaction
None
No user interaction needed

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