# CVE-2026-7590: eyal-gor p_69_branch_monkey_mcp Preview Endpoint advanced.py os command injection

> Remote attackers can execute arbitrary OS commands via the dev_script argument in the Preview Endpoint of the p_69_branch_monkey_mcp application.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 May 2026
- **Updated:** 1 May 2026
- **Also known as:** GHSA-m2h4-j4p2-4j7c

## What is CVE-2026-7590?

CVE-2026-7590 is a medium-severity command injection vulnerability in eyal-gor p_69_branch_monkey_mcp, published on 1 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was identified in eyal-gor p_69_branch_monkey_mcp up to 69bc71874ce40050ef45fde5a435855f18af3373. The affected element is an unknown function of the file branch_monkey_mcp/bridge_and_local_actions/routes/advanced.py of the component Preview Endpoint. Such manipulation of the argument dev_script leads to os command injection. The attack can be launched remotely. The exploit is publicly available and might be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-7590?


## How do I fix CVE-2026-7590?

No fix has been published for CVE-2026-7590 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7590 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7590 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7590 and fix it if it is affected.

What it is: CVE-2026-7590 is a medium-severity command injection vulnerability in eyal-gor p_69_branch_monkey_mcp, published on 1 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7590 exists.

Affected product: eyal-gor p_69_branch_monkey_mcp. 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-2026-7590/ (Markdown: https://insights.sbomify.com/CVE-2026-7590/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7590
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7590
- OSV: https://osv.dev/vulnerability/CVE-2026-7590

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-7590/
Summaries are generated and may contain mistakes; the official description above is the record.