# CVE-2026-54143: OpenHuman allows remote inbound channel messages to create unapproved shell cron jobs leading to host command execution

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

OpenHuman is an open-source agent harness available as a desktop application and Rust library. Before version 0.57.13, an attacker who can send messages to a configured external channel can cause the agent to create persistent shell cron jobs without human approval. The scheduler later executes these jobs with the privileges of the OpenHuman runtime user. Command validation also permits leading environment assignments that can redirect allowed commands to executable helpers. The demonstrated exploit requires a suitable helper executable already present on the host. This can lead to unauthorized persistent command execution and compromise data and resources accessible to OpenHuman. This issue is fixed in version 0.57.13.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- tinyhumansai / openhuman: < 0.57.13 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-78, CWE-285

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/tinyhumansai/openhuman/security/advisories/GHSA-f46p-6vf9-64mm (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/tinyhumansai/openhuman/pull/2736 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/tinyhumansai/openhuman/pull/3227 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/tinyhumansai/openhuman/commit/3a7180da7765af861bf44d79e025fc67dbeae0ca (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/tinyhumansai/openhuman/commit/4d9fe2072fdd5787023bafa2c7a63b6f8a7e9b93 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/tinyhumansai/openhuman/releases/tag/v0.57.13 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-54143; retrieved 2026-11-05; source updated 2026-11-05

Revision: bec6a588f01e74d7f3172cd1f4a2f7dd292c2295ad5f2eb027b248a4fc7f92ae

Canonical: https://y2.dev/cve/CVE-2026-54143

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.