CVE-2026-34564 CRITICAL

CVE-2026-34564: CI4MS: Menu Management (Pages) Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS

Vendor Ci4-Cms-Erp
Product ci4ms
Weakness CWE-79 · XSS
Published April 1, 2026
Last update April 2, 2026

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

What the vulnerability does

01Description

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 when adding Pages to navigation menus through the Menu Management functionality. Page-related data selected via the Pages section is stored server-side and rendered without proper output encoding. This stored payload is later rendered unsafely within administrative interfaces and public-facing navigation menus, leading to stored DOM-based cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.

Key dates

02Disclosure timeline

April 1, 2026 CVE published
April 2, 2026 Record updated