Resource Pressure Vulnerability in OpenClaw Voice-Call Package

openclaw Updated 04 Mar 2026

Summary

02/03/2026

Disclosed on

HIGH

Severity

Yes i

Fix available

High

Severity

7.5

CVSS Score

GHSA-mfg5-7q5g-f37j: @openclaw/voice-call (and the bundled copy shipped in openclaw) accepted media-stream WebSocket upgrades before stream validation. Affects openclaw versions < 2026.2.22. Fixed in 2026.2.22. How to fix ↓

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Background

OpenClaw is an open-source library designed for building real-time voice call applications. It provides functionalities for managing media streams and WebSocket connections, enabling seamless communication between clients. The library includes the @openclaw/voice-call package, which is specifically focused on handling voice call media streams. However, a vulnerability was discovered that allows unauthenticated pre-start sockets to be held open, potentially leading to resource exhaustion in deployments where the media-stream endpoint is accessible.

Vulnerability Detail

The vulnerability arises from the @openclaw/voice-call package accepting media-stream WebSocket upgrades before validating the stream. This flaw creates a window where unauthenticated clients can open idle sockets, consuming connection-related resources. If exploited, this could lead to service degradation for legitimate users, as the system may become overwhelmed by the number of open connections. The vulnerability is classified with a CVSS score of 7.5, indicating a high severity risk.

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

2026.2.22

This is the first release that contains the fix.

npm install openclaw@2026.2.22

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Workaround

As a temporary measure, you can implement a strict timeout for pre-start connections in your application. This can be done by closing sockets that do not send a valid 'start' frame within a specified timeframe. Additionally, consider limiting the number of connections per IP address to mitigate potential abuse.

Conclusion

The vulnerability in the OpenClaw voice-call package poses a significant risk to applications utilizing this library for real-time communication. By updating to the patched versions and implementing recommended workarounds, developers can mitigate the risk of resource exhaustion and ensure the stability of their services.

See every vulnerability recorded for openclaw →