CVE-2026-34570: CWE-284: Improper Access Control in ci4-cms-erp ci4ms
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.
AI Analysis
Technical Summary
CVE-2026-34570 describes an improper access control vulnerability (CWE-284) in the ci4-cms-erp project’s ci4ms product. Before version 0.31.0.0, the system failed to invalidate active sessions of deleted user accounts due to a backend logic flaw that only enforces account state changes at authentication time. There is no session expiration or account expiration mechanism, so deleted accounts retain access indefinitely until logout. This breaks the intended access control policy and can lead to unauthorized persistent access. The vulnerability has a CVSS 3.1 score of 8.8 (high severity) and has been fixed in version 0.31.0.0.
Potential Impact
Users whose accounts are deleted can continue to access the system with their active sessions indefinitely, violating access control policies. This can lead to unauthorized access with high confidentiality, integrity, and availability impact as per the CVSS score. The vulnerability affects all versions prior to 0.31.0.0 of ci4ms. No known exploits are reported in the wild.
Mitigation Recommendations
Upgrade to ci4ms version 0.31.0.0 or later, where this issue has been patched. The patch ensures that active sessions are revoked immediately upon account deletion, enforcing proper access control. Until upgraded, users should manually log out deleted accounts to prevent unauthorized access.
CVE-2026-34570: CWE-284: Improper Access Control in ci4-cms-erp ci4ms
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-34570 describes an improper access control vulnerability (CWE-284) in the ci4-cms-erp project’s ci4ms product. Before version 0.31.0.0, the system failed to invalidate active sessions of deleted user accounts due to a backend logic flaw that only enforces account state changes at authentication time. There is no session expiration or account expiration mechanism, so deleted accounts retain access indefinitely until logout. This breaks the intended access control policy and can lead to unauthorized persistent access. The vulnerability has a CVSS 3.1 score of 8.8 (high severity) and has been fixed in version 0.31.0.0.
Potential Impact
Users whose accounts are deleted can continue to access the system with their active sessions indefinitely, violating access control policies. This can lead to unauthorized access with high confidentiality, integrity, and availability impact as per the CVSS score. The vulnerability affects all versions prior to 0.31.0.0 of ci4ms. No known exploits are reported in the wild.
Mitigation Recommendations
Upgrade to ci4ms version 0.31.0.0 or later, where this issue has been patched. The patch ensures that active sessions are revoked immediately upon account deletion, enforcing proper access control. Until upgraded, users should manually log out deleted accounts to prevent unauthorized access.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-30T16:56:30.998Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69cd93ece6bfc5ba1d00363a
Added to database: 4/1/2026, 9:53:48 PM
Last enriched: 4/9/2026, 10:34:17 PM
Last updated: 5/15/2026, 8:42:39 PM
Views: 170
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.