Medium severity · published Mar 24, 2026
CVE-2026-33158
Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
cms · craftcms
>= 4.0.0-RC1, < 4.17.8; >= 5.0.0-RC1, < 5.9.14 · source: vendor
CC
Craft Cms · Craftcms
after 4.0.0 before 4.17.8; after 5.0.0 before 5.9.14; 4.0.0; 4.0.0; 4.0.0; 4.0.0; +2 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33158
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33158
Patch
https://github.com/craftcms/cms/commit/7290d91639e5e3a4f7e221dfbef95c9b77331860
Release Notes
https://github.com/craftcms/cms/releases/tag/4.17.8
Release Notes
https://github.com/craftcms/cms/releases/tag/5.9.14
Vendor Advisory
https://github.com/craftcms/cms/security/advisories/GHSA-3pvf-vxrv-hh9c
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