# CVE-2019-20097: Command injection in Bitbucket Data Center

> Remote attackers with push permissions can execute arbitrary commands on Bitbucket Server via a crafted post-receive hook file.

- **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:** No
- **Published:** 15 Jan 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-26mq-j972-xv5x

## What is CVE-2019-20097?

CVE-2019-20097 is a high-severity command injection vulnerability in Atlassian Bitbucket Data Center, published on 15 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Bitbucket Server and Bitbucket Data Center versions starting from 1.0.0 before 5.16.11, from version 6.0.0 before 6.0.11, from version 6.1.0 before 6.1.9, from version 6.2.0 before 6.2.7, from version 6.3.0 before 6.3.6, from version 6.4.0 before 6.4.4, from version 6.5.0 before 6.5.3, from version 6.6.0 before 6.6.3, from version 6.7.0 before 6.7.3, from version 6.8.0 before 6.8.2, from version 6.9.0 before 6.9.1 had a Remote Code Execution vulnerability via the post-receive hook. A remote attacker with permission to clone and push files to a repository on the victim's Bitbucket Server or Bitbucket Data Center instance, can exploit this vulnerability to execute arbitrary commands on the Bitbucket Server or Bitbucket Data Center systems, using a file with specially crafted content.

## Which versions are affected by CVE-2019-20097?

It affects 1 product.


Products: Atlassian Bitbucket.

## How do I fix CVE-2019-20097?

No fix has been published for CVE-2019-20097 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-20097 being exploited?

There is no known exploitation of CVE-2019-20097 in the wild and no public exploit code.

## Other vulnerabilities in Atlassian Bitbucket Data Center

- [CVE-2022-36804](https://insights.sbomify.com/CVE-2022-36804/): Atlassian Bitbucket Server and Data Center Command Injection (high 8.8, exploited in the wild)
- [CVE-2018-5225](https://insights.sbomify.com/CVE-2018-5225/): Path traversal in Bitbucket Server (critical 9.9)
- [CVE-2022-43781](https://insights.sbomify.com/CVE-2022-43781/): Command injection in Bitbucket Data Center (critical 9.8)
- [CVE-2019-15000](https://insights.sbomify.com/CVE-2019-15000/): Command injection in Bitbucket Data Center (critical 9.8)
- [CVE-2019-3397](https://insights.sbomify.com/CVE-2019-3397/): Path traversal in Bitbucket Data Center (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-20097 and fix it if it is affected.

What it is: CVE-2019-20097 is a high-severity command injection vulnerability in Atlassian Bitbucket Data Center, published on 15 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-20097 in the wild and no public exploit code.

Affected product: Atlassian Bitbucket Data Center. 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-2019-20097/ (Markdown: https://insights.sbomify.com/CVE-2019-20097/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-20097
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-20097
- OSV: https://osv.dev/vulnerability/CVE-2019-20097

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-20097/
Summaries are generated and may contain mistakes; the official description above is the record.