---
id: CVE-2026-100571
title: >-
  OpenClaw (npm package 'openclaw') versions >= 2026.6.6 and < 2026.8.1 apply
  the SMS webhook invalid-request rate limit before Twilio signature
  verification and identify clients only by the raw proxy socket address
summary: >-
  OpenClaw (npm package 'openclaw') versions >= 2026.6.6 and < 2026.8.1 apply
  the SMS webhook invalid-request rate limit before Twilio signature
  verification and identify clients only by the raw proxy socket address. In
  deployments where t…
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 >= 2026.6.6 < 2026.8.1
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T03:17:04.330'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100571'
references:
  - url: >-
      https://github.com/openclaw/openclaw/security/advisories/GHSA-xw48-j584-r73h
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-sms-webhook-rate-limit-bypass
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T03:25:24.688Z'
---

## Overview

OpenClaw (npm package 'openclaw') versions >= 2026.6.6 and < 2026.8.1 apply the SMS webhook invalid-request rate limit before Twilio signature verification and identify clients only by the raw proxy socket address. In deployments where the SMS/Twilio webhook sits behind a trusted reverse proxy or tunnel so that multiple external clients share one socket address, an unauthenticated remote sender can exhaust the shared pre-authentication rate-limit budget with invalid requests, causing subsequent correctly signed Twilio callbacks to receive HTTP 429 responses. The result is temporary inbound SMS loss while the shared window remains exhausted; the attacker cannot forge a callback or access message data. Fixed in 2026.8.1.

## Remediation

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