Is CVE-2026-42437 actively exploited?

No active exploitation of CVE-2026-42437 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42437 be exploited remotely?

Yes. CVE-2026-42437 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42437?

CVE-2026-42437 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-42437

HIGH

CVE-2026-42437

CWE-770Published: May 5, 2026· Updated: May 5, 2026

7.5

CVSS v3.1

EPSS:0.09%probability of exploitation in 30 daysPercentile:25.4th

Official 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.

NVD Source

Technical Analysis

CVE-2026-42437 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.