HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-100558 — OpenClaw versions before 2026.8.1 contain a resource exhaustion vulnerability in...

·Source: NIST NVD

Updated:

Executive Summary

OpenClaw versions before 2026.8.1 contain a resource exhaustion vulnerability in the Gateway listener that allows unauthenticated clients to retain response sockets by sending WebSocket upgrade requests without matching connection semantics. Attackers can repeatedly send malformed upgrade requests to exhaust listener resources and cause denial of service without consuming the WebSocket pre-auth co

Analysis

OpenClaw versions before 2026.8.1 contain a resource exhaustion vulnerability in the Gateway listener that allows unauthenticated clients to retain response sockets by sending WebSocket upgrade requests without matching connection semantics. Attackers can repeatedly send malformed upgrade requests to exhaust listener resources and cause denial of service without consuming the WebSocket pre-auth connection budget. CVSS Score: 7.5. Published: 2026-09-26T03:17:02.533.

Indicators of Compromise (1)

CVE (1)
CVE-2026-100558
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Sep 26, 2026. Verified by: NIST.

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