SB2023071368 - Improper access control in Umbraco CMS
Published: July 13, 2023 Updated: May 5, 2026
Security Bulletin ID
SB2023071368
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper access control (CVE-ID: CVE-2023-37267)
The vulnerability allows a remote attacker to gain admin-level access to the backoffice.
The vulnerability exists due to improper access control in the backoffice installation mode when Umbraco is restarted while the database is unavailable and then the connection is re-established. A remote attacker can cause the application to boot into installation mode and reset admin credentials to gain admin-level access to the backoffice.
User interaction is required.
Remediation
Install update from vendor's website.