Read the docs
TI-2026-29822 Aliases CVE-2026-41202GHSA-xp9f-pvvc-57p4

ci4ms Backup::restore is vulnerable to Zip Slip leading to RCE

Priority HIGH 76CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00677 52nd percentileScored 2026-11-07
Fix Fixed ci4ms (ci4-cms-erp): 0.31.5.0ci4-cms-erp/ci4ms (Packagist): 0.31.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ci4-cms-erpci4msbefore 0.31.5.00.31.5.0Patch availableCNA
—ci4-cms-erp/ci4ms (Packagist)before 0.31.5.00.31.5.0Patch availableGHSA-xp9f-pvvc-57p4
  • ci4ms Vendorci4-cms-erp Affected before 0.31.5.0 Fixed in 0.31.5.0 Patch available CNA
  • ci4-cms-erp/ci4ms (Packagist) Vendor— Affected before 0.31.5.0 Fixed in 0.31.5.0 Patch available GHSA-xp9f-pvvc-57p4

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*——ci4-cms-erp
  • cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:* Versions — — ·ci4-cms-erp

Remediation

  • Fix · CNA ci4ms (ci4-cms-erp) Fixed in 0.31.5.0
  • Fix · GHSA-xp9f-pvvc-57p4 ci4-cms-erp/ci4ms (Packagist) Fixed in 0.31.5.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41202
  2. 2026-10-03 Alias added: GHSA-xp9f-pvvc-57p4
  3. 2026-10-25 EPSS moved to the below the 50th percentile
  4. 2026-10-27 EPSS moved to the 50th–90th percentile

References

Advisory 1

Other 3

  • TI-2026-26819 Improper access control in ci4-cms-erp ci4ms CVSS 3.1HIGH 8.8
  • TI-2026-30140 CI4MS: Unrestricted PHP File Upload via Theme Installation Leads to Authenticated Remote Code Execution CVSS 4.0HIGH 8.6
  • TI-2026-29823 ci4ms Theme::upload is vulnerable to Zip Slip leading to RCE CVSS 4.0CRITICAL 9.4
  • TI-2026-28379 CI4MS has an .env CRLF Injection via Unvalidated `host` Parameter in Install Controller CVSS 3.1CRITICAL 9.8
  • TI-2026-27211 Cross-site scripting in ci4-cms-erp ci4ms CVSS 4.0CRITICAL 9.4
  • TI-2026-26820 Cross-site scripting in ci4-cms-erp ci4ms CVSS 3.1CRITICAL 10.0
See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences