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TI-2026-30140 Aliases CVE-2026-41587GHSA-fw49-9xq4-gmx6

CI4MS: Unrestricted PHP File Upload via Theme Installation Leads to Authenticated Remote Code Execution

Priority HIGH 78CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-434.

Summary

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. From version 0.26.0.0 to before version 0.31.7.0, a theme upload feature allows any authenticated backend user with theme-upload permission to achieve remote code execution (RCE) by uploading a crafted ZIP file. PHP files inside the ZIP are installed into the web-accessible public/ directory with no extension or content filtering, making them directly executable via HTTP. This issue has been patched in version 0.31.7.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00623 50th percentileScored 2026-11-07
Fix Fixed ci4ms (ci4-cms-erp): 0.31.7.0ci4-cms-erp/ci4ms (Packagist): 0.31.7.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ci4-cms-erpci4ms0.26.0.0 to before 0.31.7.00.31.7.0Patch availableCNA
—ci4-cms-erp/ci4ms (Packagist)0.26.0.0 to before 0.31.7.00.31.7.0Patch availableGHSA-fw49-9xq4-gmx6
  • ci4ms Vendorci4-cms-erp Affected 0.26.0.0 to before 0.31.7.0 Fixed in 0.31.7.0 Patch available CNA
  • ci4-cms-erp/ci4ms (Packagist) Vendor— Affected 0.26.0.0 to before 0.31.7.0 Fixed in 0.31.7.0 Patch available GHSA-fw49-9xq4-gmx6

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*——ci4-cms-erp
  • cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:* Versions — — ·ci4-cms-erp

Remediation

  • Fix · CNA ci4ms (ci4-cms-erp) Fixed in 0.31.7.0
  • Fix · GHSA-fw49-9xq4-gmx6 ci4-cms-erp/ci4ms (Packagist) Fixed in 0.31.7.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41587
  2. 2026-10-03 Alias added: GHSA-fw49-9xq4-gmx6
  3. 2026-10-25 EPSS moved to the below the 50th percentile
  4. 2026-11-04 EPSS moved to the 50th–90th percentile

References

Advisory 1

Other 3

  • TI-2026-26819 Improper access control in ci4-cms-erp ci4ms CVSS 3.1HIGH 8.8
  • TI-2026-29823 ci4ms Theme::upload is vulnerable to Zip Slip leading to RCE CVSS 4.0CRITICAL 9.4
  • TI-2026-29822 ci4ms Backup::restore is vulnerable to Zip Slip leading to RCE CVSS 4.0CRITICAL 9.4
  • TI-2026-28379 CI4MS has an .env CRLF Injection via Unvalidated `host` Parameter in Install Controller CVSS 3.1CRITICAL 9.8
  • TI-2026-27211 Cross-site scripting in ci4-cms-erp ci4ms CVSS 4.0CRITICAL 9.4
  • TI-2026-26820 Cross-site scripting in ci4-cms-erp ci4ms CVSS 3.1CRITICAL 10.0
See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences