OpenClaw versions before 2026.8.1 contain a resource exhaustion vulnerability in the Gateway listener that allows unauthenticated clients to retain… (CVE-2026-100558)
OpenClaw versions before 2026.8.1 have a resource exhaustion vulnerability in the Gateway listener. This flaw allows unauthenticated clients to send malformed WebSocket upgrade requests that retain response sockets improperly. Repeated exploitation can exhaust listener resources, leading to denial of service. No confidentiality or integrity impact is indicated. The vulnerability has a high severity rating with a CVSS score of 7.5.
AI Analysis
Technical Summary
The vulnerability in OpenClaw affects versions prior to 2026.8.1 and involves the Gateway listener component. Unauthenticated attackers can send WebSocket upgrade requests that do not follow expected connection semantics, causing the listener to retain response sockets unnecessarily. By repeatedly sending such malformed requests, an attacker can exhaust the listener's resources, resulting in denial of service. The vulnerability does not affect confidentiality or integrity but impacts availability.
Potential Impact
An attacker can cause denial of service by exhausting Gateway listener resources through repeated malformed WebSocket upgrade requests. There is no impact on confidentiality or integrity. The service availability is degraded or interrupted until resources are freed or the service is restarted.
Mitigation Recommendations
A fix is available in OpenClaw version 2026.8.1. Users should upgrade to this version or later to remediate the vulnerability. No other mitigation guidance is provided or necessary based on the available data.
OpenClaw versions before 2026.8.1 contain a resource exhaustion vulnerability in the Gateway listener that allows unauthenticated clients to retain… (CVE-2026-100558)
Description
OpenClaw versions before 2026.8.1 have a resource exhaustion vulnerability in the Gateway listener. This flaw allows unauthenticated clients to send malformed WebSocket upgrade requests that retain response sockets improperly. Repeated exploitation can exhaust listener resources, leading to denial of service. No confidentiality or integrity impact is indicated. The vulnerability has a high severity rating with a CVSS score of 7.5.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/openclaw/openclawRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in OpenClaw affects versions prior to 2026.8.1 and involves the Gateway listener component. Unauthenticated attackers can send WebSocket upgrade requests that do not follow expected connection semantics, causing the listener to retain response sockets unnecessarily. By repeatedly sending such malformed requests, an attacker can exhaust the listener's resources, resulting in denial of service. The vulnerability does not affect confidentiality or integrity but impacts availability.
Potential Impact
An attacker can cause denial of service by exhausting Gateway listener resources through repeated malformed WebSocket upgrade requests. There is no impact on confidentiality or integrity. The service availability is degraded or interrupted until resources are freed or the service is restarted.
Mitigation Recommendations
A fix is available in OpenClaw version 2026.8.1. Users should upgrade to this version or later to remediate the vulnerability. No other mitigation guidance is provided or necessary based on the available data.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5m65-2pj9-qf79
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-100558"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6ab74f2cf7a7c54106e1383e
Added to database: 09/26/2026, 04:50:52 UTC
Last enriched: 09/26/2026, 04:55:44 UTC
Last updated: 09/26/2026, 13:47:42 UTC
Views: 6
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