EUVD-2026-14936
GHSA-3pvf-vxrv-hh9c
CVSS Vector
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/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
Lifecycle Timeline
4Description
### 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
Analysis
An authenticated Insecure Direct Object Reference (IDOR) vulnerability in Craft CMS allows low-privileged users to read private asset content by calling the assets/edit-image endpoint with an arbitrary assetId parameter they are not authorized to view. The endpoint fails to enforce per-asset authorization checks before returning image bytes or preview redirects, enabling unauthorized disclosure of sensitive files. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.
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