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

April 1, 2026 (updated April 6, 2026)

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).

References

github.com/advisories/GHSA-g4pp-fhgf-8653
github.com/ci4-cms-erp/ci4ms
github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0
github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-g4pp-fhgf-8653
nvd.nist.gov/vuln/detail/CVE-2026-34564

Code Behaviors & Features

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