Description
Craft CMS versions >= 5.0.0-RC1, <= 5.9.13 and >= 4.0.0-RC1, <= 4.17.7 contain an authorization bypass in the assets/preview-file endpoint. The action does not enforce per-asset view authorization before returning preview content, allowing an authenticated low-privileged user to supply a controlled assetId for an asset they are not permitted to view and still receive preview response data (previewHtml), including a private preview image route containing the target private assetId. Fixed in 5.9.14 and 4.17.8.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| craftcms | cms | 5.0.0-RC1 – < 5.9.14, 4.0.0-RC1 – < 4.17.8 | 5.9.14 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | craftcms/cms | >= 5.0.0-RC1, < 5.9.14 | 5.9.14 | GHSA-44px-qjjc-xrhq |
| Packagist | craftcms/cms | >= 4.0.0-RC1, < 4.17.8 | 4.17.8 | GHSA-44px-qjjc-xrhq |