CVE-2026-28458: Openclaw

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

OpenClaw version 2026.1.20 prior to 2026.2.1 contains a vulnerability in the Browser Relay (extension must be installed and enabled) /cdp WebSocket endpoint in which it does not require authentication tokens, allowing websites to connect via loopback and access sensitive data. Attackers can exploit this by connecting to ws://127.0.0.1:18792/cdp to steal session cookies and execute JavaScript in other browser tabs.

Affected products

• Openclaw Openclaw: from 2026.1.20, before 2026.2.1 (fixed in 2026.2.1)

Published 2026-03-05. Last modified 2026-06-17.