CVE-2026-41399

OpenClaw before 2026.3.28 accepts unbounded concurrent unauthenticated WebSocket upgrades without pre-authentication budget allocation. Unauthenticated network attackers can exhaust socket and worker capacity to disrupt WebSocket availability for legitimate clients.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/openclaw/openclaw/security/advisories/GHSA-f44p-c7w9-7xr7	Vendor Advisory Patch
https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-pre-auth-websocket-upgrades	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*

History

30 Apr 2026, 16:57

Type	Values Removed	Values Added
CPE		cpe:2.3:a:openclaw:openclaw::::::node.js::*
References	~~() https://github.com/openclaw/openclaw/security/advisories/GHSA-f44p-c7w9-7xr7 -~~	() https://github.com/openclaw/openclaw/security/advisories/GHSA-f44p-c7w9-7xr7 - Vendor Advisory, Patch
References	~~() https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-pre-auth-websocket-upgrades -~~	() https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-pre-auth-websocket-upgrades - Third Party Advisory
First Time		Openclaw openclaw Openclaw

28 Apr 2026, 19:37

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-28 19:37

Updated : 2026-04-30 16:57

NVD link : CVE-2026-41399

Mitre link : CVE-2026-41399

CVE.ORG link : CVE-2026-41399

JSON object : View

Products Affected

openclaw

openclaw

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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