# CVE-2022-43781: Command injection in Bitbucket Data Center

> Attackers can execute arbitrary code via command injection in environment variables, potentially unauthenticated if public signup is enabled.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** No
- **Published:** 17 Nov 2022
- **Updated:** 2 Oct 2024
- **Also known as:** GHSA-3883-h64p-r3xm

## What is CVE-2022-43781?

CVE-2022-43781 is a critical command injection vulnerability in Atlassian Bitbucket Data Center, published on 17 Nov 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

There is a command injection vulnerability using environment variables in Bitbucket Server and Data Center. An attacker with permission to control their username can exploit this issue to execute arbitrary code on the system. This vulnerability can be unauthenticated if the Bitbucket Server and Data Center instance has enabled “Allow public signup”.

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

## Which versions are affected by CVE-2022-43781?

It affects 1 product.


Products: Atlassian Bitbucket.

## How do I fix CVE-2022-43781?

No fix has been published for CVE-2022-43781 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-43781 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-43781 exists.

Public exploit code:

- Bitbucket Environment Variable RCE (metasploit)

## 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-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)
- [CVE-2019-15010](https://insights.sbomify.com/CVE-2019-15010/): Command injection in Bitbucket Data Center (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-43781 and fix it if it is affected.

What it is: CVE-2022-43781 is a critical command injection vulnerability in Atlassian Bitbucket Data Center, published on 17 Nov 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-43781 exists.

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-2022-43781/ (Markdown: https://insights.sbomify.com/CVE-2022-43781/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-43781
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-43781
- OSV: https://osv.dev/vulnerability/CVE-2022-43781

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-43781/
Summaries are generated and may contain mistakes; the official description above is the record.