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HIGHCVE-2026-41399Published Modified CNA VulnCheck

CVE-2026-41399: OpenClaw < 2026.3.28 - Denial of Service via Unbounded Pre-auth WebSocket Upgrades

OpenClaw before 2026.3.28 accepts unbounded concurrent unauthenticated WebSocket upgrades without pre-authentication budget allocation. Unauthenticated network attackers can exhaust socket and worker capacity to disrupt WebSocket availability for legitimate clients.

Metrics

CVSS v4.0
8.7
Severity
HIGH
Fixed in
2026.3.28
Affected Products
1

Fix available

2026.3.28
Affected packages
  • OpenClaw / OpenClaw
    < 2026.3.28 (from 0)
    Fixed in 2026.3.28
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References