ci4-cms-erp CI4MS up to 0.31.8.0 Fileeditor app/Config/Routes.php deleteFileOrFolder/renameFile hiddenItems input validation

Summaryinfo

A vulnerability classified as problematic was found in ci4-cms-erp CI4MS. This issue affects the function deleteFileOrFolder/renameFile of the file app/Config/Routes.php of the component Fileeditor. The manipulation of the argument hiddenItems results in input validation. This vulnerability is cataloged as CVE-2026-45139. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in ci4-cms-erp CI4MS. Affected is the function deleteFileOrFolder/renameFile of the file app/Config/Routes.php of the component Fileeditor. The manipulation of the argument hiddenItems with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-45139 since 05/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

By approaching the search of inurl:app/Config/Routes.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 0.31.9.0 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• ci4-cms-erp

Name

• CI4MS

Version

• 0.28.5.0
• 0.31.0.0
• 0.31.2.0
• 0.31.4.0
• 0.31.5.0
• 0.31.7.0
• 0.31.8.0

Website

• Product: https://github.com/ci4-cms-erp/ci4ms/

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Once again VulDB remains the best source for vulnerability data.

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