CVE-2021-28147
CVE-2021-28147 is a medium-severity vulnerability in Grafana with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 3.5
- EPSS exploit prediction: 2% (73rd percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Grafana
- Published:
- Last modified:
Description
The team sync HTTP API in Grafana Enterprise 6.x before 6.7.6, 7.x before 7.3.10, and 7.4.x before 7.4.5 has an Incorrect Access Control issue. On Grafana instances using an external authentication service and having the EditorsCanAdmin feature enabled, this vulnerability allows any authenticated user to add external groups to any existing team. This can be used to grant a user team permissions that the user isn't supposed to have.
Frequently asked questions
- What is CVE-2021-28147?
- The team sync HTTP API in Grafana Enterprise 6.x before 6.7.6, 7.x before 7.3.10, and 7.4.x before 7.4.5 has an Incorrect Access Control issue. On Grafana instances using an external authentication service and having the EditorsCanAdmin feature enabled, this vulnerability allows any authenticated user to add external groups to any existing team. This can be used to grant a user team permissions that the user isn't supposed to have.
- How severe is CVE-2021-28147?
- CVE-2021-28147 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2021-28147 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-28147?
- CVE-2021-28147 affects Grafana. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-28147?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-28147 published?
- CVE-2021-28147 was published on 2021-03-22 and last updated on 2026-06-17.
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://security.netapp.com/advisory/ntap-20210430-0005/
- https://www.openwall.com/lists/oss-security/2021/03/19/5
Affected products (1)
- cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*
More vulnerabilities in Grafana
- CVE-2025-41115 — Critical (CVSS 10.0): SCIM provisioning was introduced in Grafana Enterprise and Grafana Cloud in April to improve how organizations manage…
- CVE-2024-9264 — Critical (CVSS 9.9): The SQL Expressions experimental feature of Grafana allows for the evaluation of `duckdb` queries containing user…
- CVE-2022-39328 — Critical (CVSS 9.8): Grafana is an open-source platform for monitoring and observability. Versions starting with 9.2.0 and less than 9.2.4…
- CVE-2022-28660 — Critical (CVSS 9.8): The querier component in Grafana Enterprise Logs 1.1.x through 1.3.x before 1.4.0 does not require authentication when…
- CVE-2022-26148 — Critical (CVSS 9.8): An issue was discovered in Grafana through 7.3.4, when integrated with Zabbix. The Zabbix password can be found in the…
- CVE-2021-39226 — Critical (CVSS 9.8): Grafana is an open source data visualization platform. In affected versions unauthenticated and authenticated users are…