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TI-2026-32853 Aliases CVE-2026-44995GHSA-mj59-h3q9-ghfh

OpenClaw < 2026.4.20 - Arbitrary Code Execution via MCP stdio Environment Variables

Priority LOW 25CWE-829Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-829.

Summary

OpenClaw before 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server configuration that allows attackers to execute arbitrary code. Malicious workspace configurations can pass dangerous startup variables like NODE_OPTIONS, LD_PRELOAD, or BASH_ENV to spawned MCP server processes, enabling code injection when operators start sessions using those servers.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00136 3rd percentileScored 2026-11-07
Fix Fixed OpenClaw (OpenClaw): 2026.4.20openclaw (npm): 2026.4.20

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenClawOpenClawbefore 2026.4.202026.4.20Patch availableCNA
—openclaw (npm)before 2026.4.202026.4.20Patch availableGHSA-mj59-h3q9-ghfh
  • OpenClaw VendorOpenClaw Affected before 2026.4.20 Fixed in 2026.4.20 Patch available CNA
  • openclaw (npm) Vendor— Affected before 2026.4.20 Fixed in 2026.4.20 Patch available GHSA-mj59-h3q9-ghfh

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*before 2026.4.20VulnerableOpenClaw
  • cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:* Versions before 2026.4.20 Vulnerable ·OpenClaw

Remediation

  • Fix · CNA OpenClaw (OpenClaw) Fixed in 2026.4.20
  • Fix · GHSA-mj59-h3q9-ghfh openclaw (npm) Fixed in 2026.4.20 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    OpenClaw 2026.4.20

    8 records Highest priority Priority LOW 8 LOW

    Other records, highest priority first

    • TI-2026-32860 OpenClaw < 2026.4.20 - Hook Session-Key Bypass via Template MappingPriority LOW 34
    • TI-2026-32857 OpenClaw < 2026.4.20 - Improper Trust Labeling in Isolated Cron Awareness EventsPriority LOW 33
    • TI-2026-32859 OpenClaw < 2026.4.20 - Gateway Config Mutation Guard Bypass via Agent Tool AccessPriority LOW 26
    Show all 8 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44995
  2. 2026-10-03 Alias added: GHSA-mj59-h3q9-ghfh

References

Patch 2

Advisory 2

Other 1

  • TI-2026-25309 OpenClaw < 2026.3.28 Media Parsing Path Traversal to Arbitrary File Read CVSS 4.0HIGH 8.7
  • TI-2026-20394 Exposure of resource to wrong sphere in OpenClaw CVSS 3.1HIGH 8.8
  • TI-2026-27742 OpenClaw < 2026.3.24 - Arbitrary Code Execution via .npmrc in Local Plugin/Hook Installation CVSS 4.0HIGH 8.4
  • TI-2026-27766 OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing CVSS 4.0MEDIUM 6.9
  • TI-2026-07315 OpenClaw bluebubbles Webhook monitor.ts handleBlueBubblesWebhookRequest improper authentication CVSS 4.0MEDIUM 6.9
  • TI-2026-17789 OpenClaw < 2026.2.22 - Allowlist Bypass via Command Substitution in system.run CVSS 4.0HIGH 7.5
See all 574 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences