Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ci4-Cms-Erp | Ci4Ms | < 0.31.0.0 |
Related Weaknesses (CWE)
References
- https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0Release Notes
- https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-fc4p-p49v-r948ExploitVendor Advisory
- https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-fc4p-p49v-r948ExploitVendor Advisory
FAQ
What is CVE-2026-34571?
CVE-2026-34571 is a vulnerability with a CVSS score of 9.9 (CRITICAL). 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 (...
How severe is CVE-2026-34571?
CVE-2026-34571 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-34571?
Check the references section above for vendor advisories and patch information. Affected products include: Ci4-Cms-Erp Ci4Ms.