CI4MS Fileeditor allows deletion and rename of critical application files due to missing…
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the Fileeditor module enforces an extension allowlist (`['css','js','html','txt','json','sql','md']`) on content-write operations (`saveFile`, `createFile`), but two destructive endpoints — `deleteFileOrFolder` and `renameFile` — never validate the extension of the *source* path. A backend user with file-editor permissions can therefore unlink or rename any file inside the project root that is not explicitly listed in the small `$hiddenItems` blocklist. Critical framework files such as `app/Config/Routes.php`, `app/Config/App.php`, `app/Config/Database.php`, `app/Config/Filters.php`, `public/index.php`, and `public/.htaccess` all live outside that blocklist and can be destroyed, producing a persistent denial of service that requires filesystem-level redeployment to recover. Version 0.31.9.0 patches the issue.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ci4-cms-erp | ci4ms | before 0.31.9.0 | 0.31.9.0 | Patch available | CNA |
| — | ci4-cms-erp/ci4ms (Packagist) | before 0.31.9.0 | 0.31.9.0 | Patch available | GHSA-245j-xjvr-xvm5 |
- ci4ms Vendorci4-cms-erp Affected before 0.31.9.0 Fixed in 0.31.9.0 Patch available CNA
- ci4-cms-erp/ci4ms (Packagist) Vendor— Affected before 0.31.9.0 Fixed in 0.31.9.0 Patch available GHSA-245j-xjvr-xvm5
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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 0.31.9.0
- Fix · GHSA-245j-xjvr-xvm5 ci4-cms-erp/ci4ms (Packagist) Fixed in 0.31.9.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-45139
- 2026-10-03 Alias added: GHSA-245j-xjvr-xvm5
References
More ci4-cms-erp vulnerabilities
- 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-2026-29822 ci4ms Backup::restore 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
Sources
- CVE-2026-45139 · CVE Program
- CVE-2026-45139 · NVD
- FIRST EPSS
- GHSA-245j-xjvr-xvm5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences