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CVE-2026-34557

CRITICAL CVSS 3.1: 9.0 EPSS 0.05%
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 within group and role management functionality. Multiple input fields (three distinct group-related fields) can be injected with malicious JavaScript payloads, which are then stored server-side.

These stored payloads are later rendered unsafely within privileged administrative views without proper output encoding, leading to stored cross-site scripting (XSS) within the role and permission management context. 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