CVE-2026-100558 OpenClaw - Denial of Service

OpenClaw < 2026.8.1 contains a resource exhaustion vulnerability caused by unauthenticated clients sending malformed WebSocket upgrade requests in the Gateway listener, letting attackers cause denial of service, exploit requires no authentication.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.28% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
26 September 2026
Updated
15 October 2026
Weakness
CWE-400

Vendor fix

Update to version 2026.8.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs