| Package | Affected versions | Patched versions |
|---|---|---|
| craftcms/cms | ≥ 4.0.0-RC1, < 4.17.5≥ 5.0.0-RC1, < 5.9.11 | 4.17.55.9.11 |
| craft cms | = 4.0.0= 5.0.0≥ 4.0.0.1, < 4.17.5≥ 5.0.1, < 5.9.11 | 4.17.55.9.11 |
The AssetsController->replaceFile() method has a targetFilename body parameter that is used unsanitized in a deleteFile() call before Assets::prepareAssetName() is applied on save. This allows an authenticated user with replaceFiles permission to delete arbitrary files within the same filesystem root by injecting ../ path traversal sequences into the filename.
This could allow an authenticated user with replaceFiles permission on one volume to delete files in other folders/volumes that share the same filesystem root.
This only affects local filesystems.
Users should update to Craft 4.17.5 or 5.9.11 to mitigate the issue.
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