CVE-2026-53818
OpenClaw < 2026.4.24 - Owner-Only Tool Policy Bypass via MCP Loopback
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jun 11, 2026
- Updated
- Jun 23, 2026
- Reserved
- Jun 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | VulnCheck |
| 3.1 | 6.6 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
OpenClawOpenClaw |
|
References
- GitHub Security Advisory (GHSA-rj6p-xmxr-qj4h)vendor-advisory
- https://www.vulncheck.com/advisories/openclaw-owner-only-tool-policy-bypass-via-mcp-loopbackthird-party-advisory
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