# CVE-2026-55743: OpenHuman desktop agent shell tool sandbox bypass leads to arbitrary command execution

> Attackers can bypass the shell tool allowlist in OpenHuman desktop agent to execute arbitrary OS commands with user privileges.

- **Severity:** Critical 9.4 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Jun 2026
- **Updated:** 10 Aug 2026
- **Also known as:** GHSA-34j2-gcwp-vrv5

## What is CVE-2026-55743?

CVE-2026-55743 is a critical command injection vulnerability in tinyhumansai OpenHuman, published on 17 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The shell tool command allowlist in the SecurityPolicy of OpenHuman desktop agent through 0.54.0 (default Supervised security policy) can be bypassed to execute arbitrary OS commands with the privileges of the desktop user.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-184 (Incomplete List of Disallowed Inputs)

## Which versions are affected by CVE-2026-55743?


## How do I fix CVE-2026-55743?

No fix has been published for CVE-2026-55743 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-55743 being exploited?

There is no known exploitation of CVE-2026-55743 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-55743 and fix it if it is affected.

What it is: CVE-2026-55743 is a critical command injection vulnerability in tinyhumansai OpenHuman, published on 17 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-55743 in the wild and no public exploit code.

Affected product: tinyhumansai OpenHuman. 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-2026-55743/ (Markdown: https://insights.sbomify.com/CVE-2026-55743/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-55743
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55743
- OSV: https://osv.dev/vulnerability/CVE-2026-55743

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-55743/
Summaries are generated and may contain mistakes; the official description above is the record.