Authentication Inconsistency in OpenClaw Package - Local WebSocket Relay Vulnerability

openclaw Updated 04 Mar 2026

Summary

03/03/2026

Disclosed on

MODERATE

Severity

Yes i

Fix available

Moderate

Severity

5.1

CVSS Score

GHSA-pfv7-rr5m-qmv6: OpenClaw has auth inconsistency on local Browser Extension Relay /extension endpoint. Affects openclaw versions < 2026.2.19. Fixed in 2026.2.19. How to fix ↓

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Background

OpenClaw is an npm package that facilitates communication between a local browser extension and various web services. It provides features such as WebSocket relays for real-time data exchange. However, a recent vulnerability has been identified that allows unauthenticated access to certain endpoints when the extension relay feature is enabled, potentially compromising the security of local interactions.

Vulnerability Detail

The vulnerability arises from the '/extension' endpoint accepting unauthenticated WebSocket upgrades while other endpoints like '/json/*' and '/cdp' require authentication. This inconsistency allows a local process on the same machine to connect to the '/extension' endpoint without a token, leading to potential interference with the extension-relay behavior. It is important to note that this issue is local-only and does not present a remote network exploit path.

How To Fix

Latest published version: 2026.10.6 as of 22 Oct 2026

npm install openclaw@2026.10.6

Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.

If you need the minimum change

2026.2.19

This is the first release that contains the fix.

npm install openclaw@2026.2.19

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Workaround

As a temporary workaround, ensure that the extension relay feature is disabled until the package is updated. This can be done by modifying the configuration settings in your application to prevent the use of the '/extension' endpoint.

Conclusion

The OpenClaw package has a vulnerability that allows unauthenticated access to the '/extension' endpoint when the extension relay feature is enabled. It is crucial to update to version 2026.2.19 or later to ensure proper authentication is enforced. Users should also consider using Vulert for ongoing monitoring of vulnerabilities in their applications.

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