CVE-2026-100558
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Sep 26, 2026
Vendor
unknown
Description
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.