CVE-2026-28458

OpenClaw 2026.1.20 < 2026.2.1 - Missing Authentication in Browser Relay /cdp WebSocket Endpoint

State: Published
Severity: 7.4 High
Published: Mar 5, 2026
Updated: Mar 9, 2026
Reserved: Feb 27, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.4 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N	VulnCheck

Weaknesses

CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
OpenClawOpenClaw	2026.1.20 to before 2026.2.1Affected

References

GitHub Security Advisory (GHSA-mr32-vwc2-5j6h)vendor-advisory
Patch Commitpatch
VulnCheck Advisory: OpenClaw 2026.1.20 < 2026.2.1 - Missing Authentication in Browser Relay /cdp WebSocket Endpointthird-party-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.