CVE-2026-34571: CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version…

PriorityP349critical9CVSS 3.1

AVNACLPRLUIRSCCHIHAH

EPSS

0.39%

31.1th percentile

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, a Stored Cross-Site Scripting (Stored XSS) vulnerability exists in the backend user management functionality. The application fails to properly sanitize user-controlled input before rendering it in the administrative interface, allowing attackers to inject persistent JavaScript code. This results in automatic execution whenever backend users access the affected page, enabling session hijacking, privilege escalation, and full administrative account compromise. This issue has been patched in version 0.31.0.0.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
ci4-cms-erp	ci4ms	< 0.31.0.0	0.31.0.0
ci4-cms-erp	ci4ms	>= 0 < 0.31.0.0	0.31.0.0

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