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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | < 2026.3.28 | 2026.3.28 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | openclaw | < 2026.3.28 | 2026.3.28 | GHSA-f44p-c7w9-7xr7 |
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