CVE-2026-100558
8.7
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
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| OpenClaw | OpenClaw | 0 < 2026.8.1 | affected |
| OpenClaw | OpenClaw | 2026.8.1 | unaffected |
Weaknesses
- CWE-400: Uncontrolled Resource Consumption
References
- https://github.com/openclaw/openclaw/security/advisories/GHSA-4r25-35qc-fr6j
- https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-resource-exhaustion-via-websocket-upgrade
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.