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 – Company Information. Several administrative configuration fields 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.

Affected: Packagist: ci4-cms-erp/ci4ms

## Summary ### **Vulnerability: Stored DOM XSS via System Settings – Company Information (Same-Page Attribute Breakout & Persistent Payload Injection)** - Stored Cross-Site Scripting via Unsanitized Company Information Configuration Fields with Immediate Same-Page Execution

### Description The application fails to properly sanitize user-controlled input within **System Settings – Company Information**. Several administrative configuration fields accept attacker-controlled input that is stored server-side and later rendered without proper output encoding.

Affected fields include, but are not limited to: 1. Company Name 2. Slogan 3. Company Phone 4. Company Mobile 5. Company Email 6. Google Maps iframe link 7. Company Logo and other media-related fields

Unlike the public-facing landing page injection vulnerability, this issue executes directly on the same settings page. The injected payload breaks out of the HTML attribute context and is immediately interpreted by the browser when rendered, resulting in same-page DOM-based stored XSS.

This represents different functionality and a separate vulnerability from public-facing rendering.

### Affected Functionality - System Settings – Company Information configuration - Same-page rendering of user-controlled input fields - DOM attribute injection within form inputs - Storage and retrieval of company information values

### Attack Scenario - An attacker injects a malicious JavaScript payload into one or more Company Information f…