CVE-2026-42437CWE-770

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

High · published May 5, 2026

CVSS v4.0
8.2
EPSS
1%
Percentile
54.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.2 · HIGH
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
EPSS
0.00750 · 54.4th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-05-05T11:24Z
EPSS history
Timeline
  • 05 MAY 11:24Z
    OpenClaw 2026.4.9 < 2026.4.10 - Denial of Service via Oversized WebSocket Frames in Voice-call Realtime Path
    cvelistv5