Description
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 immediately revoke active user sessions when an account is deactivated. Due to a logic flaw in the backend design, account state changes are enforced only during authentication (login), not for already-established sessions. The system implicitly assumes that authenticated users remain trusted for the lifetime of their session. There is no session expiration or account expiration mechanism in place, causing deactivated accounts to retain indefinite access until the user manually logs out. This behavior breaks the intended access control policy and results in persistent unauthorized access, representing a critical security flaw. This issue has been patched in version 0.31.0.0.
Affected products
ci4-cms-erp: ci4ms
References3
- github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-8fq3-c5w3… ExploitVendor Advisory
- github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-8fq3-c5w3… ExploitVendor Advisory
- github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0 Release Notes
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 44 · as of 12 November 2026
- CWE
- CWE-284CWE-613CWE-1254
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.