CVE-2026-41203

UNKNOWN 0.0

ci4ms Theme::upload is vulnerable to Zip Slip leading to RCE

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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 Theme::upload extracts user uploaded ZIP archives without validating entry names, allowing an authenticated backend user with the theme 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.

CWE	CWE-22
Vendor	ci4-cms-erp
Product	ci4ms
Published	May 7, 2026

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Affected Versions

ci4-cms-erp / ci4ms

< 0.31.5.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-xv3r-vr59-95rg github.com: https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.5.0