CVE-2021-28146

Name: CVE-2021-28146
Creator: NVD / NIST
Published: 2021-03-22T14:15:14.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.40%

Last modified Jun 17, 2026

CVE-2021-28146 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 1.40% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.40%

69.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
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://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://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-2021-28146?

How severe is CVE-2021-28146?

CVE-2021-28146 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.40% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28146?

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-2021-28146?

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

Scan your code now

Source: NVD / NIST