# CVE-2026-54916: Code injection in devicetype-library

> Unauthenticated contributors can execute arbitrary code on CI runners by shadowing modules, leading to credential theft and data exposure.

- **Severity:** High 8.8 (`CVSS:3.1/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:** 17 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-wwg5-825x-83g6

## What is CVE-2026-54916?

CVE-2026-54916 is a high-severity code injection vulnerability in netbox-community devicetype-library, published on 17 Sep 2026. 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

NetBox Device Type Library is a collection of community-sourced device type definitions for import into NetBox. The absence of tests/init.py and the lack of --import-mode=importlib cause pytest prepend import mode to place the tests directory at the front of sys.path during collection. An unauthenticated contributor can add a module such as tests/git.py that shadows GitPython when tests/definitions_test.py executes from git import Git, Repo, or add tests/conftest.py for automatic collection-time execution. Python imports and runs the pull-request module before any test function, allowing arbitrary code execution on the GitHub Actions runner, test-result tampering, and access to tokens or network resources exposed to the workflow. This module-shadowing path is independent of the earlier pickle deserialization flaw and the separately tracked NETBOX_DT_LIBRARY_URL issue. This vulnerability is fixed by commit b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037.

Weakness: CWE-829 (Inclusion of Functionality from Untrusted Control Sphere), CWE-427 (Uncontrolled Search Path Element)

## Which versions are affected by CVE-2026-54916?


## How do I fix CVE-2026-54916?

No fix has been published for CVE-2026-54916 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-54916 being exploited?

There is no known exploitation of CVE-2026-54916 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54916 and fix it if it is affected.

What it is: CVE-2026-54916 is a high-severity code injection vulnerability in netbox-community devicetype-library, published on 17 Sep 2026. 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-2026-54916 in the wild and no public exploit code.

Affected product: netbox-community devicetype-library. 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-2026-54916/ (Markdown: https://insights.sbomify.com/CVE-2026-54916/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54916
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54916
- OSV: https://osv.dev/vulnerability/CVE-2026-54916

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-54916/
Summaries are generated and may contain mistakes; the official description above is the record.