What’s Vulnerable › Vulnerabilities

CVE-2021-28146

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-22 · updated 2026-06-17
• Weakness: CWE-863

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.

Affected products

• Grafana: from 7.4.0 before 7.4.5 — fixed in 7.4.5

How to fix

Upgrade to a fixed version: Grafana 7.4.5. Check the vendor advisory for mitigations.

References

• https://community.grafana.com/t/grafana-enterprise-6-7-6-7-3-10-and-7-4-5-security-update/44724
• https://community.grafana.com/t/release-notes-v6-7-x/27119
• 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/
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-3-10/
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-4-5/
• https://grafana.com/products/enterprise/
• https://www.openwall.com/lists/oss-security/2021/03/19/5
• https://community.grafana.com/t/grafana-enterprise-6-7-6-7-3-10-and-7-4-5-security-update/44724
• https://community.grafana.com/t/release-notes-v6-7-x/27119
• 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/
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-3-10/
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-4-5/

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