Description
OpenClaw before 2026.3.22 contains an authentication bypass vulnerability in the X-Forwarded-For header processing when trustedProxies is configured, allowing attackers to spoof loopback hops. Remote attackers can inject forged forwarding headers to bypass canvas authentication and rate-limiting protections by masquerading as loopback clients.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | < 2026.3.22 | 2026.3.22 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | openclaw | < 2026.3.22 | 2026.3.22 | GHSA-844j-xrrq-wgh4 |
Advisories 1
- WID-SEC-2026-0856 OpenClaw: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 12, 2026
References
- GitHub Security Advisory (GHSA-844j-xrrq-wgh4) vendor-advisory
- Patch Commit #1 patch
- Patch Commit #2 patch
- VulnCheck Advisory: OpenClaw < 2026.3.22 - XFF Loopback Spoofing Bypass in Canvas Authentication and Rate Limiter third-party-advisory