CVE-2026-42437

High

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 voice-call realtime WebSocket path.

SeverityHigh

CVSS7.5

Exploit probability—

ProductOpenclaw

PublishedMay 5, 2026

First seenMay 5, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

openclaw2026.4.10 or later

Patches

github.com/openclaw/openclaw/commit/afadb7dae6738819ad9c7d2597ace0516957d20e

Vendor advisories

github.com/openclaw/openclaw/security/advisories/GHSA-vw3h-q6xq-jjm5

Affected products

Product	Affected versions	Fixed in
openclawnpm	2026.4.9 ≤ v < 2026.4.10	2026.4.10

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