Description
OpenClaw before 2026.3.24 contains an incomplete fix for CVE-2026-32011 where the Feishu webhook handler accepts request bodies with permissive limits of 1MB and 30-second timeout before signature verification. An unauthenticated attacker can exhaust server connection resources by sending concurrent slow HTTP POST requests to the Feishu webhook endpoint, blocking legitimate webhook deliveries.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | < 2026.3.24 | 2026.3.24 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | openclaw | < 2026.3.24 | 2026.3.24 | GHSA-w6m8-cqvj-pg5v |
Advisories 1
- WID-SEC-2026-1065 OpenClaw: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 12, 2026
References
- GitHub Security Advisory (GHSA-w6m8-cqvj-pg5v) vendor-advisory
- VulnCheck Advisory: OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing third-party-advisory