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CVE-2026-41891

CI4MS: Deactivated User Session Bypass (active=0)

MEDIUM
5.3
CVSS Score
Published: May 7, 2026 at 03:24 AM UTC
Updated: October 26, 2026 at 07:10 PM UTC
1 product affected across 1 vendorCI4MS

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. From version 0.26.0 to before version 0.31.8.0, the auth filter has the deactivated/banned user check commented out. This issue has been patched in version 0.31.8.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CI4MS· Ci4-cms ERP
90%
0.26.0 ≤ v < 0.31.8.00.26.0
Affected range stops below 0.31.8.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_CONFIRM
Source: cverecord
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-5hfv-c864-qcq9
x_refsource_MISC
Source: cverecord
https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.8.0

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-613

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