Missing Authorization in Craft CMS - CVE-2026-84802
Published: August 19, 2026 / Updated: September 14, 2026
Vulnerability identifier: #VU144284
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84802
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in AssetsController::actionMoveInfo when handling crafted control panel POST requests with arbitrary folderIds or assetIds. A remote user can send a specially crafted request to disclose sensitive information.
The issue leaks aggregate metadata including asset count and total storage size across folders or volumes the user cannot view, but does not expose file contents or filenames.
Affected software
Craft CMS
How to mitigate CVE-2026-84802
Install security update from vendor's website.
Craft CMS - update to 5.10.12