CVE-2026-41399

Published: Apr 28, 2026

Modified: Apr 29, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

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.

Vendor	Product	Versions
OpenClaw	OpenClaw	affected `0 - < 2026.3.28` unaffected `2026.3.28`

Weaknesses (CWE)

CWE-770

CVSS v3.1 Details

CVSS v3.1 Vector

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

References

GitHub Security Advisory (GHSA-f44p-c7w9-7xr7)

vendor-advisory

VulnCheck Advisory: OpenClaw < 2026.3.28 - Denial of Service via Unbounded Pre-auth WebSocket Upgrades

third-party-advisory

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CVE-2026-41399

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References