CVE-2026-41203 | THREATINT

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.

PUBLISHED Reserved 2026-04-18 | Published 2026-05-07 | Updated 2026-05-07 | Assigner GitHub_M

CRITICAL: 9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

< 0.31.5.0

affected

References

github.com/.../ci4ms/security/advisories/GHSA-xv3r-vr59-95rg exploit

github.com/.../ci4ms/security/advisories/GHSA-xv3r-vr59-95rg

github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.5.0

cve.org (CVE-2026-41203)

nvd.nist.gov (CVE-2026-41203)

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