OpenClaw < 2026.5.20 - Privilege Escalation via Hook-Triggered CLI MCP Tool Authority
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Privilege escalation, Information disclosure, Security bypass
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-266, CWE-200 and CWE-284.
Summary
OpenClaw before 2026.5.20 contains a privilege escalation vulnerability where hook-triggered agent runs incorrectly receive owner-scoped MCP loopback authority instead of hook-appropriate scope. Attackers with a valid hook token can exploit the /hooks/agent endpoint to cause spawned CLI runtimes to access or invoke owner-only MCP tools, potentially executing privileged actions like persistent cron state modifications.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenClaw | OpenClaw | before 2026.5.20 | 2026.5.20 | Patch available | CNA |
| — | openclaw (npm) | before 2026.5.20 | 2026.5.20 | Patch available | GHSA-6fvr-66p3-3qj4 |
- OpenClaw VendorOpenClaw Affected before 2026.5.20 Fixed in 2026.5.20 Patch available CNA
- openclaw (npm) Vendor— Affected before 2026.5.20 Fixed in 2026.5.20 Patch available GHSA-6fvr-66p3-3qj4
Remediation
- Fix · CNA OpenClaw (OpenClaw) Fixed in 2026.5.20
- Fix · GHSA-6fvr-66p3-3qj4 openclaw (npm) Fixed in 2026.5.20 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-53814
- 2026-10-03 Alias added: GHSA-6fvr-66p3-3qj4
- 2026-10-25 Priority changed: MEDIUM → LOW
References
More Openclaw vulnerabilities
- 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
Sources
- CVE-2026-53814 · CVE Program
- CVE-2026-53814 · NVD
- FIRST EPSS
- GHSA-6fvr-66p3-3qj4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences