UpHeron
All vulnerabilities

Servers and applications

CVE-2023-37267

Possible admin-level access to backoffice without authentication under rare conditions

Severity
Critical 9.8
Published
13 Jul 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
10.6.1, 11.4.2, 12.0.1
Also known as
GHSA-h8wc-r4jh-mg7m
Sources
NVD, Project advisories (GitHub)

Description

Umbraco is a ASP.NET CMS. Under rare conditions a restart of Umbraco can allow unauthorized users access to admin-level permissions. This vulnerability was patched in versions 10.6.1, 11.4.2 and 12.0.1.

Affected software

SoftwareAffected versions
Umbraco CMSServers and applications · cpe:a:umbraco:umbraco_cms
  • From 10.0.0 before 10.6.1
  • From 11.0.0 before 11.4.2
  • From 12.0.0 before 12.0.1
Umbraco CMSServers and applications · github:umbraco/umbraco-cms
  • From 9.0.0 before 10.6.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-37267
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-37267
  • GitHub Advisory Database https://github.com/advisories/GHSA-h8wc-r4jh-mg7m
  • github.com https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-h8wc-r4jh-mg7m