CVE-2026-41891— CI4MS: Deactivated User Session Bypass (active=0)
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I. Basic Information for CVE-2026-41891
Vulnerability Information
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Vulnerability Title
CI4MS: Deactivated User Session Bypass (active=0)
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不充分的会话过期机制
Source: NVD (National Vulnerability Database)
Vulnerability Title
CI4MS 代码问题漏洞
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 0.26.0版本至0.31.8.0之前版本存在代码问题漏洞，该漏洞源于auth过滤器注释掉了禁用/封禁用户检查。
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 | >= 0.26.0, < 0.31.8.0 | - |
II. Public POCs for CVE-2026-41891
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|---|
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Same Patch Batch · ci4-cms-erp · 2026-05-07 · 6 CVEs total
| CVE-2026-41201 | 9.1 CRITICAL | CI4MS: Backup Management Full Account Takeover for All-Roles & Privilege-Escalation via St |
| CVE-2026-41202 | ci4ms Backup::restore is vulnerable to Zip Slip leading to RCE | |
| CVE-2026-41890 | CI4MS: Arbitrary Database Table Drop via Theme deleteProcess | |
| CVE-2026-41203 | ci4ms Theme::upload is vulnerable to Zip Slip leading to RCE | |
| CVE-2026-41587 | CI4MS: Unrestricted PHP File Upload via Theme Installation Leads to Authenticated Remote C |
IV. Related Vulnerabilities
Same product: ci4ms
- CVE-2026-41890
CI4MS: Arbitrary Database Table Drop via Theme deleteProcess - CVE-2026-41203
ci4ms Theme::upload is vulnerable to Zip Slip leading to RCE - CVE-2026-41202
ci4ms Backup::restore is vulnerable to Zip Slip leading to R - CVE-2026-41201
CI4MS: Backup Management Full Account Takeover for All-Roles - CVE-2026-41587
CI4MS: Unrestricted PHP File Upload via Theme Installation L
Same vendor: ci4-cms-erp
- CVE-2026-41890
CI4MS: Arbitrary Database Table Drop via Theme deleteProcess - CVE-2026-41203
ci4ms Theme::upload is vulnerable to Zip Slip leading to RCE - CVE-2026-41202
ci4ms Backup::restore is vulnerable to Zip Slip leading to R - CVE-2026-41201
CI4MS: Backup Management Full Account Takeover for All-Roles - CVE-2026-41587
CI4MS: Unrestricted PHP File Upload via Theme Installation L
Same weakness: CWE-613
- CVE-2026-41902
FreeScout's user invitation hash never expires: permanent un - CVE-2026-41519
Weblate's API Token Not Invalidated on Password Change - CVE-2026-40934
jupyter-server authentication cookies remain valid after pas - CVE-2026-42421
OpenClaw < 2026.4.8 - WebSocket Session Persistence via Shar - CVE-2026-41916
OpenClaw < 2026.4.8 - Stale Authentication State via Config
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