---
id: CVE-2026-100572
title: >-
  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
summary: >-
  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 rever…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-400
vendor: OpenClaw
product: OpenClaw
affected:
  - OpenClaw >= 2026.3.25 < 2026.8.1
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T03:17:04.570'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100572'
references:
  - url: >-
      https://github.com/openclaw/openclaw/security/advisories/GHSA-fw6q-2frm-jxxr
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-denial-of-service-via-rate-limit
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T03:25:24.689Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.