CVE-2026-41587: CWE-434: Unrestricted Upload of File with Dangerous Type in ci4-cms-erp ci4ms
CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. From version 0.26.0.0 to before version 0.31.7.0, a theme upload feature allows any authenticated backend user with theme-upload permission to achieve remote code execution (RCE) by uploading a crafted ZIP file. PHP files inside the ZIP are installed into the web-accessible public/ directory with no extension or content filtering, making them directly executable via HTTP. This issue has been patched in version 0.31.7.0.
AI Analysis
Technical Summary
The ci4ms product, a CodeIgniter 4-based CMS skeleton, has a vulnerability in its theme upload functionality in versions >= 0.26.0.0 and < 0.31.7.0. Authenticated backend users with the theme-upload permission can upload ZIP files containing PHP files that are installed into the public web directory without any extension or content filtering. This allows these PHP files to be executed remotely via HTTP, resulting in remote code execution (RCE). The vulnerability is classified under CWE-434 and has a CVSS 4.0 score of 8.6, indicating a high severity. The vulnerability has been fixed in version 0.31.7.0.
Potential Impact
An attacker with authenticated backend access and theme-upload permission can achieve remote code execution on the affected system by uploading malicious PHP code within a ZIP file. This compromises the integrity and confidentiality of the system and can lead to full system compromise. The vulnerability affects versions from 0.26.0.0 up to but not including 0.31.7.0. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in ci4ms version 0.31.7.0. Users should upgrade to this version or later to remediate the vulnerability. Since the vulnerability requires authenticated backend access with theme-upload permission, restricting this permission to trusted users can reduce risk until the patch is applied.
CVE-2026-41587: CWE-434: Unrestricted Upload of File with Dangerous Type in ci4-cms-erp ci4ms
Description
CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. From version 0.26.0.0 to before version 0.31.7.0, a theme upload feature allows any authenticated backend user with theme-upload permission to achieve remote code execution (RCE) by uploading a crafted ZIP file. PHP files inside the ZIP are installed into the web-accessible public/ directory with no extension or content filtering, making them directly executable via HTTP. This issue has been patched in version 0.31.7.0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The ci4ms product, a CodeIgniter 4-based CMS skeleton, has a vulnerability in its theme upload functionality in versions >= 0.26.0.0 and < 0.31.7.0. Authenticated backend users with the theme-upload permission can upload ZIP files containing PHP files that are installed into the public web directory without any extension or content filtering. This allows these PHP files to be executed remotely via HTTP, resulting in remote code execution (RCE). The vulnerability is classified under CWE-434 and has a CVSS 4.0 score of 8.6, indicating a high severity. The vulnerability has been fixed in version 0.31.7.0.
Potential Impact
An attacker with authenticated backend access and theme-upload permission can achieve remote code execution on the affected system by uploading malicious PHP code within a ZIP file. This compromises the integrity and confidentiality of the system and can lead to full system compromise. The vulnerability affects versions from 0.26.0.0 up to but not including 0.31.7.0. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in ci4ms version 0.31.7.0. Users should upgrade to this version or later to remediate the vulnerability. Since the vulnerability requires authenticated backend access with theme-upload permission, restricting this permission to trusted users can reduce risk until the patch is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-21T14:15:21.959Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fc1390cbff5d861073261e
Added to database: 5/7/2026, 4:22:40 AM
Last enriched: 5/7/2026, 4:36:28 AM
Last updated: 5/8/2026, 8:05:55 PM
Views: 15
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