# CVE-2021-32546: OS Command Injection in gogs

> An unprivileged user can achieve remote code execution by manipulating Git configuration files to inject malicious commands via the sshCommand option.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 31 May 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-56j7-2pm8-rgmx, GO-2022-0471

## What is CVE-2021-32546?

CVE-2021-32546 is a high-severity command injection vulnerability in n/a, published on 31 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Missing input validation in internal/db/repo_editor.go in Gogs before 0.12.8 allows an attacker to execute code remotely. An unprivileged attacker (registered user) can overwrite the Git configuration in his repository. This leads to Remote Command Execution, because that configuration can contain an option such as sshCommand, which is executed when a master branch is a remote branch (using an ssh:// URI). The remote branch can also be configured by editing the Git configuration file. One can create a new file in a new repository, using the GUI, with "\" as its name, and then rename this file to .git/config with the custom configuration content (and then save it).

## Which versions are affected by CVE-2021-32546?

3 open source packages ship an affected version, including gogs.io/gogs. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `gogs.io/gogs` | Go | All versions | 0.12.8 |
| `gogs.io/gogs` | Go | All versions | 0.12.8 |
| `gogs.io/gogs` | Go | All versions | 0.12.8 |

Products: Gogs Gogs.

## How do I fix CVE-2021-32546?

Upgrade gogs.io/gogs to 0.12.8 or later.

## Is CVE-2021-32546 being exploited?

There is no known exploitation of CVE-2021-32546 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2025-8110](https://insights.sbomify.com/CVE-2025-8110/): Gogs Path Traversal (high 8.7, exploited in the wild)
- [CVE-2024-56731](https://insights.sbomify.com/CVE-2024-56731/): Gogs deletion of internal files allows remote command execution (critical 10.0)
- [CVE-2022-1884](https://insights.sbomify.com/CVE-2022-1884/): Remote Command Execution in gogs/gogs (critical 10.0)
- [CVE-2022-1986](https://insights.sbomify.com/CVE-2022-1986/): OS Command Injection in gogs/gogs (critical 10.0)
- [CVE-2022-1992](https://insights.sbomify.com/CVE-2022-1992/): Path Traversal in gogs/gogs (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32546 and fix it if it is affected.

What it is: CVE-2021-32546 is a high-severity command injection vulnerability in n/a, published on 31 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-32546 in the wild and no public exploit code.

Affected packages and fixed versions:
- gogs.io/gogs (Go): affected all versions; fixed in 0.12.8
- gogs.io/gogs (Go): affected all versions; fixed in 0.12.8
- gogs.io/gogs (Go): affected all versions; fixed in 0.12.8

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-2021-32546/ (Markdown: https://insights.sbomify.com/CVE-2021-32546/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32546
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32546
- OSV: https://osv.dev/vulnerability/CVE-2021-32546

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32546/
Summaries are generated and may contain mistakes; the official description above is the record.