# CVE-2018-20236: Command injection in Sourcetree for Windows

> A remote attacker can execute arbitrary code on a victim's system by sending a malicious URI to Sourcetree for Windows.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 8 Mar 2019
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-52v2-8xvg-r55r

## What is CVE-2018-20236?

CVE-2018-20236 is a high-severity command injection vulnerability in Atlassian Sourcetree for Windows, published on 8 Mar 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

There was an command injection vulnerability in Sourcetree for Windows from version 0.5a before version 3.0.10 via URI handling. A remote attacker could send a malicious URI to a victim using Sourcetree for Windows to exploit this issue to gain code execution on the system.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2018-20236?

It affects 1 product.


Products: Atlassian Sourcetree.

## How do I fix CVE-2018-20236?

No fix has been published for CVE-2018-20236 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-20236 being exploited?

There is no known exploitation of CVE-2018-20236 in the wild and no public exploit code.

## Other vulnerabilities in Atlassian Sourcetree for Windows

- [CVE-2018-13385](https://insights.sbomify.com/CVE-2018-13385/): Command injection in Sourcetree for macOS (critical 9.8)
- [CVE-2017-8768](https://insights.sbomify.com/CVE-2017-8768/): Command injection in n/a (critical 9.8)
- [CVE-2024-21697](https://insights.sbomify.com/CVE-2024-21697/): Code injection in Sourcetree for Mac (high 8.8)
- [CVE-2019-11582](https://insights.sbomify.com/CVE-2019-11582/): Command injection in Sourcetree for Windows (high 8.8)
- [CVE-2018-20234](https://insights.sbomify.com/CVE-2018-20234/): Command injection in Sourcetree for macOS (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-20236 and fix it if it is affected.

What it is: CVE-2018-20236 is a high-severity command injection vulnerability in Atlassian Sourcetree for Windows, published on 8 Mar 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-20236 in the wild and no public exploit code.

Affected product: Atlassian Sourcetree for Windows. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2018-20236/ (Markdown: https://insights.sbomify.com/CVE-2018-20236/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-20236
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-20236
- OSV: https://osv.dev/vulnerability/CVE-2018-20236

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-20236/
Summaries are generated and may contain mistakes; the official description above is the record.