CVE Catalog

CVE-2026-100558

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.28%

18th percentile - higher than 18% of all known CVEs

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 connection budget.

Risk Assessment

An attacker could cause a denial of service (DoS) by exhausting Gateway listener resources, preventing legitimate clients from using the service. This may disrupt application operations and infrastructure dependent on the Gateway.

Recommendation

Update OpenClaw to version 2026.8.1 or later. Consider restricting network access to the Gateway listener and monitoring for unusual WebSocket upgrade requests.

Other vulnerabilities in OpenClaw

See all
Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS