CVE-2026-42437

HIGH

OpenClaw 2026.4.9 < 2026.4.10 - Denial of Service via Oversized WebSocket Frames in Voice-call Realtime Path

Title source: cna
STIX 2.1

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.

References (3)

Core 3
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-vw3h-q6xq-jjm5)
https://github.com/openclaw/openclaw/security/advisories/GHSA-vw3h-q6xq-jjm5
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw 2026.4.9 < 2026.4.10 - Denial of Service via Oversized WebSocket Frames in Voice-call Realtime Path
https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-oversized-websocket-frames-in-voice-call-realtime-path

Scores

CVSS v3 7.5
EPSS 0.0042
EPSS Percentile 33.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (3)
npm/openclaw 2026.4.9 - 2026.4.10npm
OpenClaw/OpenClaw 2026.4.10
OpenClaw/OpenClaw 2026.4.9 - 2026.4.10
Published May 05, 2026
Tracked Since May 05, 2026