# CVE-2026-4198: hypermodel-labs mcp-server-auto-commit index.ts getGitChanges command injection

> Local attackers can execute arbitrary commands via the getGitChanges function in the mcp-server-auto-commit tool.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Mar 2026
- **Updated:** 16 Mar 2026
- **Also known as:** GHSA-2jfp-p8r8-g24g

## What is CVE-2026-4198?

CVE-2026-4198 is a medium-severity command injection vulnerability in hypermodel-labs mcp-server-auto-commit, published on 15 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability was determined in hypermodel-labs mcp-server-auto-commit 1.0.0. Affected by this vulnerability is the function getGitChanges of the file index.ts. This manipulation causes command injection. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. Patch name: f7d992c830c5f2ec5749852e66c0195e3ed7fe30. Applying a patch is the recommended action to fix this issue. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-4198?


## How do I fix CVE-2026-4198?

No fix has been published for CVE-2026-4198 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4198 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4198 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4198 and fix it if it is affected.

What it is: CVE-2026-4198 is a medium-severity command injection vulnerability in hypermodel-labs mcp-server-auto-commit, published on 15 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4198 exists.

Affected product: hypermodel-labs mcp-server-auto-commit. 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-2026-4198/ (Markdown: https://insights.sbomify.com/CVE-2026-4198/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4198
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4198
- OSV: https://osv.dev/vulnerability/CVE-2026-4198

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-4198/
Summaries are generated and may contain mistakes; the official description above is the record.