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.
Attack Parameters
Attack Vector
Network
Атака возможна удалённо
Attack Complexity
Low
Легко эксплуатировать
Attack Requirements
Present
Нужны дополнительные условия
Privileges Required
None
Права не нужны
User Interaction
Active
Нужно действие пользователя
Impact Assessment
Confidentiality
High
Полная утечка данных
Integrity
High
Полная модификация данных
Availability
None
Нет нарушения работы
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/openclaw/openclaw/commit/a1e89afcc19efd641c02b24d66d689f181a…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-mr32-vwc2-5j6h
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/openclaw-missing-authentication-in-browser…
disclosure@vulncheck.com