CVE-2021-28146: Grafana

Medium severity, CVSS 6.5. EPSS: 1.4% chance of exploitation in the next 30 days.

The team sync HTTP API in Grafana Enterprise 7.4.x before 7.4.5 has an Incorrect Access Control issue. On Grafana instances using an external authentication service, this vulnerability allows any authenticated user to add external groups to existing teams. This can be used to grant a user team permissions that the user isn't supposed to have.

Affected products

• Grafana Grafana: from 7.4.0, before 7.4.5 (fixed in 7.4.5)

Published 2021-03-22. Last modified 2026-06-17.