CVE-2021-28148 Missing authorization in n/a

What is CVE-2021-28148?

CVE-2021-28148 is a high-severity missing authorization vulnerability in Grafana Grafana, published on 22 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-306

Which versions are affected by CVE-2021-28148?

1 open source package ship an affected version, including grafana. It affects 1 product.

Products include Grafana Grafana.

How do I fix CVE-2021-28148?

Upgrade grafana to a fixed version for your release line: 6.7.6, 7.3.10 or 7.4.5.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-28148 being exploited?

There is no known exploitation of CVE-2021-28148 in the wild and no public exploit code.

Other vulnerabilities in Grafana Grafana

• CVE-2021-43798 Grafana Path Traversal Exploited High 7.5
• CVE-2025-41115 Incorrect privilege assignment Critical 10.0
• CVE-2022-39328 Grafana vulnerable to race condition allowing privilege escalation Critical 9.8
• CVE-2022-28660 Auth bypass in n/a Critical 9.8
• CVE-2022-26148 Information disclosure in n/a Critical 9.8

All Grafana Grafana vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-grafana-2021-28148, GHSA-qhvm-m99m-qq44.