CVE-2026-53820
CVE-2026-53820
OpenClaw before 2026.5.12 contains an exec denylist bypass vulnerability in the bundle MCP loopback session-spawn path that allows authenticated callers to bypass intended command restrictions. Attackers can reach the affected bundled MCP…
Vulnerability class: Broken Access Control
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L.
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-53820?
- CVE-2026-53820 is a medium-severity vulnerability, classified under Missing Authorization. CVSS score: 6.6/10. Published 2026-06-12.
- How severe is CVE-2026-53820?
- Medium severity. CVSS v3 base score is 6.6 out of 10.