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Vulnerability record · CVE-2026-41587 · published 7 May 2026

CVE-2026-41587: Unrestricted file upload vulnerability

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.

8.6 CVSS 4.0 High EPSS 0.68% · top 49.7% CWE-434 · Unrestricted file upload Deferred
8.6CVSS 4.0 base score
0.68%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

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:

References

LinkTags
https://github.com/ci4-cms-erp/ci4ms/commit/b969465e71eacd9eb57014ad1fce1fc34fa7bca0
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-fw49-9xq4-gmx6
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-fw49-9xq4-gmx6

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Source: NIST National Vulnerability Database (record CVE-2026-41587), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.