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CVE-2026-34570

Ci4-cms-erp Ci4ms broken access control

8.8 HIGHPublic exploitEPSS 0.65%
  1. Published1 Apr 2026

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 deleted. 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 deleted 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. This issue has been patched in version 0.31.0.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Ci4-cms-erp Ci4ms< 0.31.0.0

Remediation

Fixed in
Ci4-cms-erp Ci4ms≥ 0.31.0.0

References

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Frequently asked

Is CVE-2026-34570 being actively exploited?

CVE-2026-34570 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.65%.

How severe is CVE-2026-34570?

CVE-2026-34570 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.65% probability of exploitation.

Which products are affected by CVE-2026-34570?

Affected products include Ci4-cms-erp Ci4ms.

How do I fix CVE-2026-34570?

Upgrade affected software to a fixed version, for example Ci4-cms-erp Ci4ms 0.31.0.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-34570 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.