Auth bypass in Openclaw
CVE-2026-100573
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.001 (1.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
Weakness classification (CWE)
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)
Frequently asked questions
- What is CVE-2026-100573?
- CVE-2026-100573 is a low-severity vulnerability in Openclaw, classified under Missing Authorization. CVSS score: 3.3/10. Published 2026-09-26.
- How severe is CVE-2026-100573?
- Low severity. CVSS v3 base score is 3.3 out of 10.