Missing Authorization in Craft CMS - #VU159605
Published: November 6, 2026
Vulnerability identifier: #VU159605
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 an authenticated control panel user to read aggregate user-registration counts and totals in Craft CMS without permission to view users.
The vulnerability exists due to a missing viewUsers authorization check in the /actions/charts/get-new-users-data endpoint when handling requests from control panel accounts. An authenticated control panel user can send a POST request to retrieve registration time series for the entire site or an arbitrary user group.
Affected software
Craft CMS
Remediation
Install security update from vendor's website.
Craft CMS - update to 5.11.5