CVE-2021-28148

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.

• CWE-306

• https://community.grafana.com/t/grafana-enterprise-6-7-6-7-3-10-and-7-4-5-security-update/44724Vendor Advisory
• https://community.grafana.com/t/release-notes-v6-7-x/27119Release Notes, Vendor Advisory
• https://grafana.com/blog/2021/03/18/grafana-6.7.6-7.3.10-and-7.4.5-released-with-important-security-fixes-for-grafana-enterprise/Release Notes, Vendor Advisory
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-3-10/Release Notes, Vendor Advisory
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-4-5/Release Notes, Vendor Advisory
• https://grafana.com/products/enterprise/Product, Vendor Advisory
• https://security.netapp.com/advisory/ntap-20210430-0005/Third Party Advisory
• https://www.openwall.com/lists/oss-security/2021/03/19/5Mailing List, Third Party Advisory
• https://community.grafana.com/t/grafana-enterprise-6-7-6-7-3-10-and-7-4-5-security-update/44724Vendor Advisory
• https://community.grafana.com/t/release-notes-v6-7-x/27119Release Notes, Vendor Advisory
• https://grafana.com/blog/2021/03/18/grafana-6.7.6-7.3.10-and-7.4.5-released-with-important-security-fixes-for-grafana-enterprise/Release Notes, Vendor Advisory
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-3-10/Release Notes, Vendor Advisory
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-4-5/Release Notes, Vendor Advisory
• https://grafana.com/products/enterprise/Product, Vendor Advisory
• https://security.netapp.com/advisory/ntap-20210430-0005/Third Party Advisory
• https://www.openwall.com/lists/oss-security/2021/03/19/5Mailing List, Third Party Advisory

Published

Mar 22, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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