Description
OpenClaw before 2026.3.28 contains a missing rate limiting vulnerability in the Nextcloud Talk webhook authentication that allows attackers to brute-force weak shared secrets. Attackers who can reach the webhook endpoint can exploit this to forge inbound webhook events by repeatedly attempting authentication without throttling.
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-9528-x887-j2fp |
Advisories 1
- WID-SEC-2026-0930 OpenClaw: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 28, 2026