CVE-2026-28458: OpenClaw 2026.1.20 < 2026.2.1 - Missing Authentication in Browser Relay /cdp WebSocket Endpoint
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 Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-28458?
CVE-2026-28458 is classified as a high severity vulnerability due to missing authentication in the Browser Relay WebSocket endpoint.
How do I fix CVE-2026-28458?
To fix CVE-2026-28458, upgrade OpenClaw to version 2026.2.1 or later.
What impact does CVE-2026-28458 have on my system?
CVE-2026-28458 may allow unauthorized access to the Browser Relay functionality, potentially leading to data exposure or manipulation.
Which versions of OpenClaw are affected by CVE-2026-28458?
OpenClaw versions prior to 2026.2.1 are affected by CVE-2026-28458.
Is authentication required for the /cdp WebSocket endpoint in CVE-2026-28458?
No, CVE-2026-28458 indicates that the /cdp WebSocket endpoint does not require authentication, making it vulnerable.