CVE-2026-33158
published 2026-03-24CVE-2026-33158: 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…
PriorityP341medium6.5CVSS 3.1
AVNACLPRLUINSUCHINAN
EPSS
0.35%
27.1th percentile
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.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| craftcms | cms | — | — |
| craftcms | cms | — | — |
| craftcms | cms | >= 4.0.0-RC1 < 4.17.8 | 4.17.8 |
| craftcms | cms | >= 5.0.0-RC1 < 5.9.14 | 5.9.14 |
| craftcms | craft_cms | < 4.17.8 | 4.17.8 |
| craftcms | craft_cms | < 5.9.14 | 5.9.14 |
| craftcms | craft_cms | — | — |
| craftcms | craft_cms | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv4.04.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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OSV
Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
osv·2026-03-24
CVE-2026-33158 [MEDIUM] Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
### 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-
GHSA
Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
ghsa·2026-03-24
CVE-2026-33158 [MEDIUM] CWE-639 Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
### 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-
No detection rules found.
No public exploits indexed.
2026-03-24
Published