CVE-2026-41203: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in ci4-cms-erp ci4ms
CVE-2026-41203 is a critical path traversal vulnerability in the ci4ms product of the ci4-cms-erp project. The issue exists in versions prior to 0.31.5.0 where the Theme::upload function extracts user-uploaded ZIP archives without validating the entry names. This allows an authenticated backend user with theme create permission to write files to arbitrary filesystem locations, potentially leading to remote code execution by placing a PHP file under the public web root. The vulnerability has been patched in version 0.31.5.0.
AI Analysis
Technical Summary
The vulnerability in ci4ms (versions before 0.31.5.0) arises from improper validation of ZIP archive entry names during theme uploads. An authenticated backend user with theme create permission can exploit this path traversal (Zip Slip) flaw to write files outside the intended directory, including the public web root, enabling remote code execution. This is classified under CWE-22. The issue is fixed in version 0.31.5.0.
Potential Impact
Exploitation allows an authenticated backend user to write arbitrary files to the filesystem, including placing malicious PHP files in the web root, resulting in remote code execution. This can lead to full system compromise of the affected server running vulnerable ci4ms versions prior to 0.31.5.0.
Mitigation Recommendations
Upgrade ci4ms to version 0.31.5.0 or later, where this vulnerability has been patched. No other mitigation is indicated or required as the fix is official and addresses the root cause.
CVE-2026-41203: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in ci4-cms-erp ci4ms
Description
CVE-2026-41203 is a critical path traversal vulnerability in the ci4ms product of the ci4-cms-erp project. The issue exists in versions prior to 0.31.5.0 where the Theme::upload function extracts user-uploaded ZIP archives without validating the entry names. This allows an authenticated backend user with theme create permission to write files to arbitrary filesystem locations, potentially leading to remote code execution by placing a PHP file under the public web root. The vulnerability has been patched in version 0.31.5.0.
CVSS v4.0
Score 9.4critical
Affected software
pkg:github/ci4-cms-erp/ci4msRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in ci4ms (versions before 0.31.5.0) arises from improper validation of ZIP archive entry names during theme uploads. An authenticated backend user with theme create permission can exploit this path traversal (Zip Slip) flaw to write files outside the intended directory, including the public web root, enabling remote code execution. This is classified under CWE-22. The issue is fixed in version 0.31.5.0.
Potential Impact
Exploitation allows an authenticated backend user to write arbitrary files to the filesystem, including placing malicious PHP files in the web root, resulting in remote code execution. This can lead to full system compromise of the affected server running vulnerable ci4ms versions prior to 0.31.5.0.
Mitigation Recommendations
Upgrade ci4ms to version 0.31.5.0 or later, where this vulnerability has been patched. No other mitigation is indicated or required as the fix is official and addresses the root cause.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-18T02:51:52.974Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fc1390cbff5d861073261a
Added to database: 05/07/2026, 04:22:40 UTC
Last enriched: 05/14/2026, 10:50:17 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 185
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