Improper access control in OpenClaw - CVE-2026-28395
Published: May 4, 2026
Vulnerability identifier: #VU129452
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-28395
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose limited information and cause a denial of service.
The vulnerability exists due to improper access control in ensureChromeExtensionRelayServer when handling a wildcard cdpUrl. A remote attacker can send requests to exposed relay HTTP endpoints to disclose limited information and cause a denial of service.
The issue occurs when the relay HTTP/WS server is bound to all interfaces because wildcard hosts are treated as loopback.
How to mitigate CVE-2026-28395
Install security update from vendor's website.