OpenClaw before 2026.8.1 SMS Webhook Rate Limit Bypass
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.
CVE-2026-100571
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-100571
OpenClaw
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "OpenClaw",
"product": "OpenClaw",
"versions": [
{
"status": "affected",
"version": "2026.6.6",
"lessThan": "2026.8.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2026.8.1",
"versionType": "semver"
}
],
"packageURL": "pkg:npm/openclaw",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-100571
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #3256 · Revision 1
- Added to Heist Feed
- Publisher date