CVE-2026-42437

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.

Score

CVSS 4.0 8.2 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-05-05

Last modified

2026-05-26

Weaknesses

CWE-770

Affected products

• Openclaw (Openclaw)

References

• https://github.com/openclaw/openclaw/commit/afadb7dae6738819ad9c7d2597ace0516957d20e
• https://github.com/openclaw/openclaw/security/advisories/GHSA-vw3h-q6xq-jjm5
• https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-oversized-websocket-frames-in-voice-call-realtime-p…