Improper Privilege Management Affecting umbraco.cms.api.management package, versions [15.3.1,16.5.1)[17.0.0-beta,17.2.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Mar 2026
- disclosed11 Mar 2026
- creditodgrso
Introduced: 11 Mar 2026
NewCVE-2026-31834 (opens in a new tab)How to fix?
Upgrade Umbraco.Cms.Api.Management to version 16.5.1, 17.2.2 or higher.
Overview
Affected versions of this package are vulnerable to Improper Privilege Management due to insufficient authorization enforcement when modifying user group memberships. An attacker can gain higher-level privileges by assigning highly privileged roles without proper validation of their own permissions.
Note:
This is only exploitable if an authenticated backoffice user has permission to manage users.