# CVE-2026-19593: Command injection in Codex Desktop

> Attacker-controlled Git config in a workspace triggers arbitrary code execution outside the sandbox, allowing file access and modification.

- **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:** 1 Sep 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-hcf6-9q9g-xx3c

## What is CVE-2026-19593?

CVE-2026-19593 is a critical command injection vulnerability in OpenAI Codex Desktop, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

OpenAI Codex Desktop for Windows and macOS automatically inspected Git metadata and working-tree status when a user opened a workspace. If the workspace contains a repository with preserved attacker-controlled .git/config, the attr.tree setting and a configured clean or process filter can cause Git to run an attacker-controlled program. The program runs outside Codex's command sandbox with the signed-in user's privileges, without a workspace-trust prompt, command approval, or interaction with a model. The attacker can read, modify, or delete files and access credentials available to that user. Exploitation requires Git to be available on PATH and the user to open the attacker-prepared repository with its local Git configuration intact. An ordinary Git clone does not copy the source repository's .git/config and is not sufficient by itself.

Weakness: CWE-15 (External Control of System or Configuration Setting)

## Which versions are affected by CVE-2026-19593?


## How do I fix CVE-2026-19593?

No fix has been published for CVE-2026-19593 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19593 being exploited?

There is no known exploitation of CVE-2026-19593 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19593 and fix it if it is affected.

What it is: CVE-2026-19593 is a critical command injection vulnerability in OpenAI Codex Desktop, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-19593 in the wild and no public exploit code.

Affected product: OpenAI Codex Desktop. 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-2026-19593/ (Markdown: https://insights.sbomify.com/CVE-2026-19593/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19593
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19593
- OSV: https://osv.dev/vulnerability/CVE-2026-19593

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19593/
Summaries are generated and may contain mistakes; the official description above is the record.