CVE-2026-42421: Openclaw

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

OpenClaw before 2026.4.8 contains a session management vulnerability where existing WebSocket sessions survive shared gateway token rotation. Attackers can maintain unauthorized access to WebSocket connections after token rotation by exploiting the failure to disconnect existing shared-token sessions.

Affected products

• Openclaw Openclaw: before 2026.4.8 (fixed in 2026.4.8)

Published 2026-04-28. Last modified 2026-06-17.