GHSA-44px-qjjc-xrhq
Medium · 4.3Craft CMS: Authorized asset "preview file" requests bypass allows users without asset access to retrieve private preview metadata
CVSS
4.3
EPSS
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Published
Mar 26, 2026
CISA due date
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The record
An authenticated low-privileged user can call `assets/preview-file` for an asset they are not authorized to view and still receive preview response data (`previewHtml`) for that private asset. The returned preview HTML included a private preview image route containing the target private `assetId`, even though `canView` was `false` for the attacker account.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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