Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-56384 Details

ANALYZED

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

Description

Craft CMS contains a missing authorization vulnerability in the assets/preview-thumb endpoint. A Control Panel user without permission to view a target private asset can call the endpoint with an attacker-controlled assetId and receive preview HTML containing a signed fallback transform preview link for that private asset, because no asset-view permission check is performed before preview generation. This affects versions >= 4.0.0-RC1, <= 4.17.7 and >= 5.0.0-RC1, <= 5.9.13, and is fixed in 4.17.8 and 5.9.14.

Metrics

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27 [email protected]Source CodeVendor
https://github.com/craftcms/cms/security/advisories/GHSA-x76w-8c62-48mg [email protected]AdvisoryVendor
https://www.vulncheck.com/advisories/craft-cms-missing-authorization-in-assets-preview-thumb-endpoint [email protected]Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-862Missing Authorization[email protected]

Affected Products

ProductVersions
Craft CMS
>= 4.0.0-RC1, <= 4.17.7 (semver)
>= 5.0.0-RC1, <= 5.9.13 (semver)

CPE

  • cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*

Remediation

  • Upgrade: 4.17.8moderate effort
  • Upgrade: 5.9.14moderate effort

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-56384
NVD Published Date:
Jun 21, 2026
NVD Last Modified:
Jun 24, 2026
Source:
[email protected]
CVE-2026-56384 Details - Not Deferred