CRITICAL SeverityCVSS 4.09.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVE-2026-41203

Last updated May 07, 2026 · Published May 07, 2026

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 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.

Affected products

1 listed

ci4-cms-erp:ci4ms

Mappings

CWE

CWE-22

CAPEC

None listed.

Research

Path traversal: how to detect and prevent itPath traversal lets attackers read or write files outside intended directories. Normalise paths, resolve them…

Training

CVE-2026-41203

Description

Affected products

Mappings

Related