CVE-2026-34567: CI4MS: Blogs Posts (Categories) 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 creating or editing blog posts within the Categories section. An attacker can inject a malicious JavaScript payload into the Categories content, which is then stored server-side.

This stored payload is later rendered unsafely when the Categories are viewed via blog posts, without proper output encoding, leading to stored cross-site scripting (XSS).

References

github.com/advisories/GHSA-r33w-c82v-x5v7
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-r33w-c82v-x5v7
nvd.nist.gov/vuln/detail/CVE-2026-34567

Code Behaviors & Features

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