Is this vulnerability remotely exploitable by a website?

Yes. A malicious website loaded in the user's browser can initiate a WebSocket connection to ws://127.0.0.1:18792/cdp when the extension is active and exploit the missing authentication to gain access to sensitive debugging capabilities.

Does an attacker need prior access to the victim's machine?

No direct system access is required. The attacker primarily needs the victim to visit a crafted web page while the OpenClaw Browser Relay extension is installed and enabled. The attack operates through the browser's ability to talk to localhost.

What is the safest general fix pattern for developers?

Treat the /cdp endpoint as a privileged API and require robust, per-session authentication (e.g., unguessable tokens, extension-managed secrets) for every connection, regardless of source IP. Additionally, gate sensitive operations behind explicit user or extension authorization, and disable the endpoint by default.

Severity:

HIGH RISK

(8.1)

Missing Authentication for Local WebSocket Debug Endpoint (CWE-306) in OpenClaw Browser Relay

CVE-2026-28458

Published:

Mar 5, 2026

Status:

Received

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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CRITICAL RISK

CRITICAL

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SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-306

Impact:

Account Takeover and Cross-Tab Session Hijacking via Local WebSocket Abuse

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-306

Impact:

Account Takeover and Cross-Tab Session Hijacking via Local WebSocket Abuse

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Missing Authentication for Local WebSocket Debug Endpoint (CWE-306) in OpenClaw Browser Relay

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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