要点
- CVE-2026-33158 は craftcms/cms, craft cms (craftcms) に影響する深刻度「中」 (CVSS 6.5) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.36%（全脆弱性の 29.7% より高い）。
- 対処：4.17.8, 5.9.14 以降に更新してください。
| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|
| craftcms/cms Packagist | ≥ 4.0.0-RC1, < 4.17.8≥ 5.0.0-RC1, < 5.9.14
| 4.17.85.9.14
|
| craft cms | = 4.0.0= 5.0.0> 4.0.0, < 4.17.8> 5.0.0, < 5.9.14
| 4.17.85.9.14
|
概要
Summary
A low-privileged authenticated user can read private asset content by calling assets/edit-image with an arbitrary assetId that they are not authorized to view.
The endpoint returns image bytes (or a preview redirect) without enforcing a per-asset view authorization check, leading to potential unauthorized disclosure of private files.
Details
Root cause:
- A user-controlled object reference (
assetId) is used to load and return sensitive content.
- The action does not verify whether the current user is authorized to view that asset.
- This creates an authenticated IDOR / authorization bypass.
Impact
- Craft installations where private/non-public assets exist and low-privileged users can authenticate.
Resources
https://github.com/craftcms/cms/commit/7290d91639e
NVD の説明
Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, a low-privileged authenticated user can read private asset content by calling assets/edit-image with an arbitrary assetId that they are not authorized to view. The endpoint returns image bytes (or a preview redirect) without enforcing a per-asset view authorization check, leading to potential unauthorized disclosure of private files. This issue has been patched in versions 4.17.8 and 5.9.14.
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