CVE-2026-53818

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

CVSS 6.9 MEDIUMEPSS 0.1%CWE-862

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.9EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

11 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

Affected products

OpenClaw · OpenClaw

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References

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