# CVE-2021-28147: Missing authorization in n/a

> Authenticated users can improperly add external groups to teams in Grafana Enterprise when EditorsCanAdmin is enabled, granting unauthorized team permissions.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 22 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** BIT-grafana-2021-28147, GHSA-jfp3-g5xg-h74p

## What is CVE-2021-28147?

CVE-2021-28147 is a medium-severity missing authorization vulnerability in Grafana Grafana, published on 22 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

## Which versions are affected by CVE-2021-28147?

1 open source package ship an affected version, including grafana. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `grafana` | Bitnami | From 6.0.0 | 6.7.6, 7.3.10, 7.4.5 |

Products: Grafana Grafana.

## How do I fix CVE-2021-28147?

Upgrade grafana to a fixed version for your release line: 6.7.6, 7.3.10 or 7.4.5.

## Is CVE-2021-28147 being exploited?

There is no known exploitation of CVE-2021-28147 in the wild and no public exploit code.

## Other vulnerabilities in Grafana Grafana

- [CVE-2021-43798](https://insights.sbomify.com/CVE-2021-43798/): Grafana Path Traversal (high 7.5, exploited in the wild)
- [CVE-2025-41115](https://insights.sbomify.com/CVE-2025-41115/): Incorrect privilege assignment (critical 10.0)
- [CVE-2022-39328](https://insights.sbomify.com/CVE-2022-39328/): Grafana vulnerable to race condition allowing privilege escalation (critical 9.8)
- [CVE-2022-28660](https://insights.sbomify.com/CVE-2022-28660/): Auth bypass in n/a (critical 9.8)
- [CVE-2022-26148](https://insights.sbomify.com/CVE-2022-26148/): Information disclosure in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-28147 and fix it if it is affected.

What it is: CVE-2021-28147 is a medium-severity missing authorization vulnerability in Grafana Grafana, published on 22 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-28147 in the wild and no public exploit code.

Affected packages and fixed versions:
- grafana (Bitnami): affected from 6.0.0; fixed in 6.7.6, 7.3.10, 7.4.5

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-28147/ (Markdown: https://insights.sbomify.com/CVE-2021-28147/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-28147
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-28147
- OSV: https://osv.dev/vulnerability/CVE-2021-28147

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-28147/
Summaries are generated and may contain mistakes; the official description above is the record.