# CVE-2026-90618: GH05TCREW PentestAgent LocalRuntime runtime.py LocalRuntime.execute_command os command injection

> Remote attackers can execute arbitrary OS commands via the LocalRuntime.execute_command function in PentestAgent.

- **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:** 14 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** GHSA-mx9h-pq7w-987x

## What is CVE-2026-90618?

CVE-2026-90618 is a medium-severity command injection vulnerability in GH05TCREW PentestAgent, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw has been found in GH05TCREW PentestAgent up to cf882dabea3ed91cef016cdd115e5426315665a2. This issue affects the function LocalRuntime.execute_command of the file runtime/runtime.py of the component LocalRuntime. Executing a manipulation can lead to os command injection. The attack may be performed from remote. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.

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-2026-90618?


## How do I fix CVE-2026-90618?

No fix has been published for CVE-2026-90618 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-90618 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90618 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90618 and fix it if it is affected.

What it is: CVE-2026-90618 is a medium-severity command injection vulnerability in GH05TCREW PentestAgent, published on 14 Sep 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-2026-90618 exists.

Affected product: GH05TCREW PentestAgent. 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-2026-90618/ (Markdown: https://insights.sbomify.com/CVE-2026-90618/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90618
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90618
- OSV: https://osv.dev/vulnerability/CVE-2026-90618

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-90618/
Summaries are generated and may contain mistakes; the official description above is the record.