Description
OpenClaw before 2026.8.2 contains a denial of service vulnerability in the Browser extension relay that allows unauthenticated network sources to exhaust pending-authentication capacity. Attackers can hold every pending slot by maintaining silent WebSocket upgrades, preventing paired extensions from completing Browser Relay Authentication v2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | < 2026.8.2 | 2026.8.2 |
Advisories 1
- WID-SEC-2026-3316 OpenClaw: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2026
References
- GitHub Security Advisory (GHSA-m78m-7h3q-q938) vendor-advisory
- VulnCheck Advisory: OpenClaw before 2026.8.2 Denial of Service via Browser Relay third-party-advisory