CVE-2026-34571: critical vulnerability in ci4-cms-erp ci4ms
CI4MS: Stored Cross‑Site Scripting (Stored XSS) in Backend User Management Allows Session Hijacking and Full Administrative Account Compromise
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 10epss 0.4%
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, a Stored Cross-Site Scripting (Stored XSS) vulnerability exists in the backend user management functionality. The application fails to properly sanitize user-controlled input before rendering it in the administrative interface, allowing attackers to inject persistent JavaScript code. This results in automatic execution whenever backend users access the affected page, enabling session hijacking, privilege escalation, and full administrative account compromise. This issue has been patched in version 0.31.0.0.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
ci4-cms-erp · ci4msRelated CVEs — ci4-cms-erp ci4ms
In the same product, most dangerous first.
CVE-2026-25510CRITICALCI4MS Vulnerable to Remote Code Execution (RCE) via Arbitrary File Creation and Save in File EditorEPSS 0.9%CVE-2026-41202CRITICALci4ms Backup::restore is vulnerable to Zip Slip leading to RCEEPSS 0.7%CVE-2026-41587HIGHCI4MS: Unrestricted PHP File Upload via Theme Installation Leads to Authenticated Remote Code ExecutionEPSS 0.6%CVE-2026-41203CRITICALci4ms Theme::upload is vulnerable to Zip Slip leading to RCEEPSS 0.6%CVE-2026-39394HIGHCI4MS has an .env CRLF Injection via Unvalidated `host` Parameter in Install ControllerEPSS 0.5%CVE-2026-34572HIGHCI4MS: Account Deactivation Module Full Persistent Unauthorized Access for All‑Roles via Improper Session Invalidation (Logic Flaw)EPSS 0.5%