GHSA-mj59-h3q9-ghfh

Source

https://github.com/advisories/GHSA-mj59-h3q9-ghfh

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mj59-h3q9-ghfh/GHSA-mj59-h3q9-ghfh.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-mj59-h3q9-ghfh

Aliases

CVE-2026-44995

Downstream

MINI-rvgr-g98r-p2mv

Published

2026-04-25T23:48:03Z

Modified

2026-05-19T16:00:13.193904133Z

Severity

5.4 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

OpenClaw: MCP stdio server env could load dangerous startup variables from workspace config

Details

Affected Packages / Versions

Package: openclaw (npm)
Affected versions: < 2026.4.20
Patched version: 2026.4.20

Impact

Workspace MCP stdio configuration could pass dangerous process-startup environment variables such as NODE_OPTIONS, LD_PRELOAD, or BASH_ENV to the spawned MCP server process. In a malicious workspace, this could make the MCP child load attacker-controlled code when the operator starts a session that uses that MCP server.

The impact is limited to local/workspace trust boundaries and requires the operator to run OpenClaw in a workspace containing the malicious MCP configuration. Severity is therefore medium, not high/critical.

Fix

OpenClaw now filters MCP stdio environment entries through the host environment safety denylist before spawning stdio MCP servers.

Fix commits:

62fa5071896e95edc7f67d1cebc70a2859e283af
85d86ebc4bf3d2226d39d132a484f4f7a299fa1b

Release

Fixed in OpenClaw 2026.4.20.

Database specific

{
    "github_reviewed_at": "2026-04-25T23:48:03Z",
    "nvd_published_at": null,
    "cwe_ids": [
        "CWE-427",
        "CWE-454",
        "CWE-829"
    ],
    "severity": "MODERATE",
    "github_reviewed": true
}

References

Affected packages

npm / openclaw

Package

Name: openclaw; View open source insights on deps.dev
Purl: pkg:npm/openclaw

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2026.4.20

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mj59-h3q9-ghfh/GHSA-mj59-h3q9-ghfh.json"