OpenClaw versions 2026.4.9 before 2026.4.10 contain a denial of service vulnerability in the voice-call realtime WebSocket path that accepts oversized frames without proper validation. Remote attackers can send oversized WebSocket frames to cause service unavailability for deployments exposing the webhook path.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-vw3h-q6xq-jjm5 OpenClaw: Voice-call realtime WebSocket accepted oversized frames
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 05 May 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 05 May 2026 11:45:00 +0000

Type Values Removed Values Added
Description OpenClaw versions 2026.4.9 before 2026.4.10 contain a denial of service vulnerability in the voice-call realtime WebSocket path that accepts oversized frames without proper validation. Remote attackers can send oversized WebSocket frames to cause service unavailability for deployments exposing the webhook path.
Title OpenClaw 2026.4.9 < 2026.4.10 - Denial of Service via Oversized WebSocket Frames in Voice-call Realtime Path
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-770
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-05T12:20:06.090Z

Reserved: 2026-04-27T11:40:07.152Z

Link: CVE-2026-42437

cve-icon Vulnrichment

Updated: 2026-05-05T12:19:59.400Z

cve-icon NVD

Status : Received

Published: 2026-05-05T12:16:18.190

Modified: 2026-05-05T12:16:18.190

Link: CVE-2026-42437

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-05T12:30:24Z

Weaknesses