# CVE-2026-49134: CodexBar < 0.32.0 Privilege Escalation via CLI Installer Temp File

> Local attackers can exploit a race condition in the CodexBar CLI installer to execute arbitrary commands as root by rewriting temporary files.

- **Severity:** High 7.5 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 1 Jun 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-gg57-wg6f-c8vg

## What is CVE-2026-49134?

CVE-2026-49134 is a high-severity vulnerability in steipete CodexBar, published on 1 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

CodexBar prior to 0.32.0 contains a privilege escalation vulnerability in the CLI installer that allows local attackers to execute arbitrary commands as root by exploiting a race condition in temporary file handling. The installer creates a temporary file with mktemp, writes a privileged shell payload into it, and executes it with administrator privileges via bash, allowing a same-user local process to rewrite the installer body before the administrator prompt is approved, causing attacker-controlled commands to run as root.

Weakness: CWE-377 (DEPRECATED: Insecure Temporary File)

## Which versions are affected by CVE-2026-49134?


## How do I fix CVE-2026-49134?

No fix has been published for CVE-2026-49134 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-49134 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49134 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-49134 and fix it if it is affected.

What it is: CVE-2026-49134 is a high-severity vulnerability in steipete CodexBar, published on 1 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49134 exists.

Affected product: steipete CodexBar. 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-2026-49134/ (Markdown: https://insights.sbomify.com/CVE-2026-49134/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-49134
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-49134
- OSV: https://osv.dev/vulnerability/CVE-2026-49134

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-49134/
Summaries are generated and may contain mistakes; the official description above is the record.