CVE-2026-41399

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductOpenclaw

PublishedApr 28, 2026

First seenApr 28, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

openclaw openclaw2026.3.28 or later
openclaw2026.3.28 or later

Vendor advisories

github.com/openclaw/openclaw/security/advisories/GHSA-f44p-c7w9-7xr7

Affected products

Product	Affected versions	Fixed in
openclaw openclaw	v < 2026.3.28	2026.3.28
openclawnpm	v < 2026.3.28	2026.3.28

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.