Vulnerability · Published Jul 20, 2026 · Assigned by GitHub_M
CVE-2026-45139CI4MS Fileeditor allows deletion and rename of critical application files due to missing extension allowlist on destructive operations
Medium 6.5
In plain English
A medium-severity security flaw in ci4ms from ci4-cms-erp. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | ci4-cms-erp/ci4ms | 0.31.9.0 | GHSA-245j-xjvr-xvm5 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ci4-cms-erp | ci4ms | < 0.31.9.0 |
Weakness: CWE-73 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
References
- https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-245j-xjvr-xvm5 x_refsource_CONFIRM
- https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.9.0 x_refsource_MISC