High severityGHSA Advisory· Published May 7, 2026· Updated May 7, 2026
CVE-2026-41587
CVE-2026-41587
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
ci4-cms-erp/ci4msPackagist | >= 0.26.0.0, < 0.31.7.0 | 0.31.7.0 |
Affected products
2- Range: >= 0.26.0.0, <= 0.31.6.0
Patches
Vulnerability mechanics
References
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