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CVE-2026-34570— CI4MS: Account Deletion Module Full Persistent Unauthorized Access for All‑Roles via Improper Session Invalidation (Logic Flaw)

Quick assessment

Affected
ci4-cms-erp ci4ms
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CI4MS是Ci4MS开源的一个博客页面管理工具。 CI4MS 0.31.0.0之前版本存在安全漏洞，该漏洞源于删除账户后未立即撤销活动用户会话，可能导致持久性未授权访问。

CVSS 8.8 · High EPSS 0.65% · P50
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I. Basic Information for CVE-2026-34570

Vulnerability Information
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Vulnerability Title
CI4MS: Account Deletion Module Full Persistent Unauthorized Access for All‑Roles via Improper Session Invalidation (Logic Flaw)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
CI4MS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CI4MS是Ci4MS开源的一个博客页面管理工具。 CI4MS 0.31.0.0之前版本存在安全漏洞，该漏洞源于删除账户后未立即撤销活动用户会话，可能导致持久性未授权访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ci4-cms-erp ci4ms < 0.31.0.0 -

II. Public POCs for CVE-2026-34570

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8695 chars
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Trigger conditions & impact
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POC zip download
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III. Intelligence Information for CVE-2026-34570

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Vendor Advisories for CVE-2026-34570 (1)

Same Patch Batch · ci4-cms-erp · 2026-04-01 · 14 CVEs total

CVE-2026-34571 10.0 CRITICAL CI4MS: Stored Cross‑Site Scripting (Stored XSS) in Backend User Management Allows Session
CVE-2026-34569 10.0 CRITICAL CI4MS: Blogs Categories Full Account Takeover for All-Roles & Privilege-Escalation via Sto
CVE-2026-34568 9.1 CRITICAL CI4MS: Blogs Posts Full Account Takeover for All-Roles & Privilege-Escalation via Stored D
CVE-2026-34560 9.1 CRITICAL CI4MS: Logs Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS
CVE-2026-34559 9.1 CRITICAL CI4MS: Blogs Tags Full Account Takeover for All-Roles & Privilege-Escalation via Stored DO
CVE-2026-34567 9.1 CRITICAL CI4MS: Blogs Posts (Categories) Full Account Takeover for All-Roles & Privilege-Escalation
CVE-2026-34566 9.1 CRITICAL CI4MS: Pages Management Full Account Takeover for All-Roles & Privilege-Escalation via Sto
CVE-2026-34564 9.1 CRITICAL CI4MS: Menu Management (Pages) Full Account Takeover for All-Roles & Privilege-Escalation
CVE-2026-34563 9.1 CRITICAL CI4MS: Backup Management Full Account Takeover for All-Roles & Privilege-Escalation via St
CVE-2026-34565 9.1 CRITICAL CI4MS: Menu Management (Posts) Full Account Takeover for All-Roles & Privilege-Escalation
CVE-2026-34572 8.8 HIGH CI4MS: Account Deactivation Module Full Persistent Unauthorized Access for All‑Roles via I
CVE-2026-34562 4.7 MEDIUM CI4MS: System Settings (Company Information) Full Platform Compromise & Full Account Takeo
CVE-2026-34561 4.7 MEDIUM CI4MS: System Settings (Social Media Management) Full Platform Compromise & Full Account T

IV. Related Vulnerabilities

Same product: ci4ms
Same vendor: ci4-cms-erp
Same weakness: CWE-284

V. Comments for CVE-2026-34570

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