CVE-2026-41587

HIGH

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

Title source: cna
STIX 2.1

Description

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. From version 0.26.0.0 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.

References (2)

Core 2

Scores

CVSS v4 8.6
EPSS 0.0037
EPSS Percentile 58.8%
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-434
Status published
Products (1)
ci4-cms-erp/ci4ms >= 0.26.0.0, < 0.31.7.0
Published May 07, 2026
Tracked Since May 07, 2026