EUVD-2026-278732

fkie_cve-2026-34560

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 renders user-controlled input unsafely within the logs interface. If any stored XSS payload exists within logged data, it is rendered without proper output encoding. This issue becomes a Blind XSS scenario because the attacker does not see immediate execution. Instead, the payload is stored within application logs and only executes later when an administrator views the logs page. This issue has been patched in version 0.31.0.0.

GHSA-r4v5-rwr2-q7r4 — CI4MS: Logs Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS

Affected: Packagist: ci4-cms-erp/ci4ms

## Summary ### **Vulnerability: Stored DOM Blind XSS via Logs Interface Rendering (Administrative Context Execution)** - Stored Cross-Site Scripting (Blind XSS) via Unsafe Rendering of User-Controlled Logged Data

### Description The application renders user-controlled input unsafely within the logs interface. If any stored XSS payload exists within logged data, it is rendered without proper output encoding.

This issue becomes a Blind XSS scenario because the attacker does not see immediate execution. Instead, the payload is stored within application logs and only executes later when an administrator views the logs page.

For example, accessing `/backend/backup/restore/xss-payload-here` causes an error that gets logged by the application. If the injected portion contains an XSS payload, it is stored inside the logs without sanitization and later rendered unsafely inside the logs management interface.

When an administrator views the logs page, the stored payload executes automatically in the administrative browser context, leading to stored blind cross-site scripting (Blind XSS).

### Affected Functionality - Application logging mechanism - Logs storage and retrieval logic - Logs rendering within administrative interface - Any endpoint that logs unsanitized user-controlled input

### Attack Scenario - An attacker injects a malicious XSS payload into any user-controlled input that is logged by the application. - Example: Visit `/backend/backup/restore/<img src=x onerror=aler…

Most recent entries from all

EUVD-2026-278732

fkie_cve-2026-34560

GHSA-r4v5-rwr2-q7r4 — CI4MS: Logs Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS