CVE-2026-41202
Critical
Description
CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.5.0, ci4ms Backup::restore extracts user uploaded ZIP archives without validating entry names, allowing an authenticated backend user with the backup create permission to write files to arbitrary filesystem locations (Zip Slip) and achieve remote code execution by dropping a PHP file under the public web root. This issue has been patched in version 0.31.5.0.
SeverityCritical
CVSS9.4
Exploit probability—
ProductCi4-cms-erp/ci4ms
PublishedMay 7, 2026
First seenMay 7, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- ci4-cms-erp/ci4ms0.31.5.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ci4-cms-erp/ci4msPackagist | v < 0.31.5.0 | 0.31.5.0 |
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