What is CVE-2026-41400?

CVE-2026-41400 is a medium-severity vulnerability in Openclaw, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-04-28.

How severe is CVE-2026-41400?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Openclaw

CVE-2026-41400

OpenClaw before 2026.3.31 contains an incomplete fix for CVE-2026-32062 where the voice-call component parses large WebSocket frames before start validation. Remote attackers can send oversized pre-start WebSocket frames to cause resource…

EPSS: 0.002 (37.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Openclaw — versions 0, 2026.3.31

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

GitHub Security Advisory (GHSA-2w79-r9g8-wmcr) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw < 2026.3.31 - Resource Consumption via Oversized WebSocket Frames in voice-call (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-41400?: CVE-2026-41400 is a medium-severity vulnerability in Openclaw, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-04-28.
How severe is CVE-2026-41400?: Medium severity. CVSS v3 base score is 5.3 out of 10.