CVE-2026-100572

OpenClaw versions >= 2026.3.25 and < 2026.8.1 apply invalid-token rate limiting for Synology Chat webhooks before authentication and key the limit on the raw proxy socket address. In deployments where OpenClaw sits behind a trusted reverse proxy or tunnel and multiple external clients share a single socket address, an unauthenticated sender can exhaust the shared invalid-token budget, causing subsequent legitimate Synology Chat webhook callbacks to be rejected until the rate-limit window expires. The attacker cannot obtain a valid token or read message data; the impact is temporary loss of channel availability. Fixed in 2026.8.1.

• https://github.com/openclaw/openclaw/security/advisories/GHSA-fw6q-2frm-jxxr
• https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-denial-of-service-via-rate-limit