Vulnerability · Published Sep 26, 2026 · Assigned by VulnCheck
CVE-2026-100573OpenClaw before 2026.8.1 Sandbox Policy Bypass via MCP Loopback
Low 3.3
In plain English
A low-severity missing authorization in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.1%top 98.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenClaw versions before 2026.8.1 contain a sandbox policy bypass vulnerability in the MCP loopback component that allows sandboxed coding-agent sessions to invoke tools explicitly denied by sandbox.tools.deny policy. Attackers can list and invoke denied tools to access data or perform actions the operator intended to exclude from the sandbox.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- GitHub Security Advisory (GHSA-5m4g-88rg-69pj) vendor-advisory
- VulnCheck Advisory: OpenClaw before 2026.8.1 Sandbox Policy Bypass via MCP Loopback third-party-advisory