CVE-2026-31834 - CERT CVE
ID CVE-2026-31834
Sažetak Umbraco is an ASP.NET CMS. From 15.3.1 to before 16.5.1 and 17.2.2, A privilege escalation vulnerability has been identified in Umbraco CMS. Under certain conditions, authenticated backoffice users with permission to manage users, may be able to elevate their privileges due to insufficient authorization enforcement when modifying user group memberships. The affected functionality does not properly validate whether a user has sufficient privileges to assign highly privileged roles. This vulnerability is fixed in 16.5.1 and 17.2.2.
Reference
CVSS
Base: 7.2
Impact: 5.9
Exploitability:1.2
Pristup
VektorSloženostAutentikacija
NETWORK LOW HIGH
Impact
PovjerljivostCjelovitostDostupnost
HIGH HIGH HIGH
CVSS vektor CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Zadnje važnije ažuriranje 11-03-2026 - 13:52
Objavljeno 10-03-2026 - 22:16