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CVE-2026-56385 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Craft CMS versions >= 5.0.0-RC1, <= 5.9.13 and >= 4.0.0-RC1, <= 4.17.7 contain an authorization bypass in the assets/preview-file endpoint. The action does not enforce per-asset view authorization before returning preview content, allowing an authenticated low-privileged user to supply a controlled assetId for an asset they are not permitted to view and still receive preview response data (previewHtml), including a private preview image route containing the target private assetId. Fixed in 5.9.14 and 4.17.8.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27	[email protected]	Source CodeVendor
https://github.com/craftcms/cms/security/advisories/GHSA-44px-qjjc-xrhq	[email protected]	AdvisoryVendor
https://www.vulncheck.com/advisories/craft-cms-authorization-bypass-in-assets-preview-file-endpoint	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-639	Authorization Bypass Through User-Controlled Key	[email protected]

Affected Products

Product	Versions
Craft CMS	>= 5.0.0-RC1, <= 5.9.13 (semver) >= 4.0.0-RC1, <= 4.17.7 (semver)
CPE cpe:2.3:a:craftcms:craft_cms:::::::: Remediation Upgrade: 5.9.14moderate effort Upgrade: 4.17.8moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Jun 22, 2026	CVE Modified	CISA-ADP
Jun 21, 2026	New CVE Received	[email protected]