CVE-2021-28148: Grafana

High severity, CVSS 7.5. EPSS: 3.5% chance of exploitation in the next 30 days.

One of the usage insights HTTP API endpoints in Grafana Enterprise 6.x before 6.7.6, 7.x before 7.3.10, and 7.4.x before 7.4.5 is accessible without any authentication. This allows any unauthenticated user to send an unlimited number of requests to the endpoint, leading to a denial of service (DoS) attack against a Grafana Enterprise instance.

Affected products

• Grafana Grafana: from 6.0.0, before 6.7.6 (fixed in 6.7.6); from 7.0.0, before 7.3.10 (fixed in 7.3.10); from 7.4.0, before 7.4.5 (fixed in 7.4.5)

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