CVE-2026-53818

MEDIUM 6.6

OpenClaw < 2026.4.24 - Owner-Only Tool Policy Bypass via MCP Loopback

CVSS Score

6.6

EPSS Score

0.0%

EPSS Percentile

0th

OpenClaw before 2026.4.24 contains an authorization bypass vulnerability in the MCP loopback feature that allows non-owner callers to skip owner-only tool policies and before-tool-call hooks. Attackers can invoke owner-only behavior through the affected loopback path to execute restricted tools when the feature is enabled and reachable.

CWE	CWE-862
Vendor	openclaw
Product	openclaw
Published	Jun 11, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

Low

Affected Versions

OpenClaw / OpenClaw

0 < 2026.4.24

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-rj6p-xmxr-qj4h vulncheck.com: https://www.vulncheck.com/advisories/openclaw-owner-only-tool-policy-bypass-via-mcp-loopback

Credits

🔍 zsx (@zsxsoft) KeenSecurityLab qclawer qclawer