CVE-2021-28148

Name: CVE-2021-28148
Creator: NVD / NIST
Published: 2021-03-22T15:15:14.597+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.50%

Last modified Jun 17, 2026

CVE-2021-28148 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 3.50% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

3.50%

87.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Grafana	Grafana	>= 6.0.0, < 6.7.6
Grafana	Grafana	>= 7.0.0, < 7.3.10
Grafana	Grafana	>= 7.4.0, < 7.4.5

References

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

Timeline

Published: Mar 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28148?

How severe is CVE-2021-28148?

CVE-2021-28148 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.50% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28148?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-28148?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST