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CVE-2026-33158— Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)

Quick assessment

Affected
craftcms cms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Craft CMS是Craft CMS开源的一套内容管理系统（CMS）。 Craft CMS 4.17.8之前版本和5.9.14之前版本存在安全漏洞，该漏洞源于未强制执行按资源查看授权检查，可能导致未经授权读取私有资产内容。

AI Predicted 6.5 Difficulty: Easy EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-33158

Vulnerability Information
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Vulnerability Title
Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS: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
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Craft CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Craft CMS是Craft CMS开源的一套内容管理系统（CMS）。 Craft CMS 4.17.8之前版本和5.9.14之前版本存在安全漏洞，该漏洞源于未强制执行按资源查看授权检查，可能导致未经授权读取私有资产内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
craftcms cms >= 4.0.0-RC1, < 4.17.8 -

II. Public POCs for CVE-2026-33158

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III. Intelligence Information for CVE-2026-33158

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Patches & Fixes for CVE-2026-33158 (1)

Vendor Advisories for CVE-2026-33158 (1)

Vendor Pages for CVE-2026-33158 (2)

Same Patch Batch · craftcms · 2026-03-24 · 6 CVEs total

CVE-2026-33160 Craft CMS: Anonymous "generate transform" calls for assets can expose private assets via t
CVE-2026-33162 Craft CMS: Authorization bypass in "entries/move-to-section" allows control panel user to
CVE-2026-33157 Craft CMS: Potential authenticated Remote Code Execution via malicious attached Behavior
CVE-2026-33161 Craft CMS: Anonymous "assets/image-editor" calls returns private asset editor metadata to
CVE-2026-33159 Craft CMS: Unauthenticated users could execute project configuration sync operations that

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-639

V. Comments for CVE-2026-33158

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