CVE-2026-53820: Openclaw

Medium severity, CVSS 6.6. EPSS: 0.1% chance of exploitation in the next 30 days.

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 session-spawn path to start sessions with broader command reach than intended.

Affected products

• Openclaw Openclaw: before 2026.5.12 (fixed in 2026.5.12)

Published 2026-06-12. Last modified 2026-07-23.