Improper access control in OpenClaw - #VU129398
Published: May 4, 2026
Vulnerability identifier: #VU129398
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
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 local user to interfere with extension-relay behavior.
The vulnerability exists due to improper access control in the /extension endpoint when handling WebSocket upgrade requests. A local user can connect to the endpoint without the token to interfere with extension-relay behavior.
Only instances with the optional Chrome extension relay enabled are vulnerable.
Remediation
Install security update from vendor's website.