CVE-2026-100558
OpenClaw before 2026.8.1 Resource Exhaustion via WebSocket Upgrade
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-400 |
| Vendor | openclaw |
| Product | openclaw |
| Published | Sep 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
OpenClaw / OpenClaw
0 < 2026.8.1
References
Credits
🔍 BrandonChoKR