Missing Authorization in Craft CMS - #VU139961
Published: July 29, 2026
Vulnerability identifier: #VU139961
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: N/A
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 ChartsController::actionGetNewUsersData() endpoint when handling POST requests to /actions/charts/get-new-users-data. A remote user can send a crafted request to disclose sensitive information.
Only aggregate user registration counts and timestamps are exposed, including counts for arbitrary user group IDs and requested time windows.
Affected software
Craft CMS
Remediation
Install security update from vendor's website.
Craft CMS - addressed in versions 4.18.1, 5.10.3