CVE-2026-41203ci4ms Theme::upload is vulnerable to Zip Slip leading to RCE
Updated under an hour ago ()
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It affects ci4-cms-erp ci4ms. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.4 CRITICAL (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- May 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ci4-cms-erp ci4ms ci4_cms_erp:ci4ms (from the name) | before 0.31.5.0 | CNA record |
References
- https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-xv3r-vr59-95rgx-refsource-confirm
- https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.5.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.