# CVE-2026-12398: Galaxy_ng: shell injection in legacy role import via unsanitized git ref names

> Authenticated users can execute arbitrary commands on the pulp worker via shell metacharacters in git ref names when legacy roles are enabled.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/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:** 16 Jun 2026
- **Updated:** 29 Jun 2026
- **Also known as:** GHSA-6hw7-j4jw-wpff, PYSEC-2026-2486

## What is CVE-2026-12398?

CVE-2026-12398 is a high-severity command injection vulnerability in Red Hat Ansible Automation Platform 2, published on 16 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A command injection vulnerability was found in galaxy_ng. The do_git_checkout() function in the legacy role import API (v1) interpolates unsanitized git ref names (branch/tag names) into shell commands executed via subprocess.run() with shell=True. An authenticated user who controls a git repository can create a branch or tag with shell metacharacters in the name to achieve remote code execution on the pulp worker. The vulnerable endpoint is only reachable when GALAXY_ENABLE_LEGACY_ROLES is set to True, which is not the default configuration.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-12398?

3 open source packages ship an affected version, including galaxy-ng.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `galaxy-ng` | PyPI | All versions to 4.9.2 | None |
| `galaxy-ng` | PyPI | All versions to 4.9.2 | None |
| `galaxy-ng` | PyPI | All versions to 4.9.2 | None |

## How do I fix CVE-2026-12398?

No fix has been published for CVE-2026-12398 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12398 being exploited?

There is no known exploitation of CVE-2026-12398 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12398 and fix it if it is affected.

What it is: CVE-2026-12398 is a high-severity command injection vulnerability in Red Hat Ansible Automation Platform 2, published on 16 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-12398 in the wild and no public exploit code.

Affected packages and fixed versions:
- galaxy-ng (PyPI): affected all versions up to 4.9.2; no fix listed
- galaxy-ng (PyPI): affected all versions up to 4.9.2; no fix listed
- galaxy-ng (PyPI): affected all versions up to 4.9.2; no fix listed

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-2026-12398/ (Markdown: https://insights.sbomify.com/CVE-2026-12398/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12398
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12398
- OSV: https://osv.dev/vulnerability/CVE-2026-12398

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-12398/
Summaries are generated and may contain mistakes; the official description above is the record.