CVE-2026-100567
Received Received - Intake

OpenClaw Gateway DNS Rebinding SSRF Vulnerability

Publication date: 2026-09-26

Last updated on: 2026-09-26

Assigner: VulnCheck

Description
OpenClaw is an agent gateway distributed as the npm package 'openclaw'. In versions >= 2026.4.5 and < 2026.8.1, the Gateway validated a single DNS resolution result for a configured remote Chrome DevTools Protocol (CDP) hostname, but the raw WebSocket and Playwright transports performed a later, independent DNS resolution, discarding the DNS pinning enforced at validation time. An attacker who controls an approved CDP hostname or its DNS answers can exploit this check-then-use gap via DNS rebinding to make the Gateway connect to a loopback, private, link-local, cloud metadata, or other SSRF-policy-denied address. The impact depends on the remote CDP configuration, DNS timing, and the services reachable from the Gateway host. The issue is fixed in 2026.8.1; as a mitigation, disable hostname-based remote CDP endpoints or restrict them to trusted, stable infrastructure.

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Meta Information

Published
2026-09-26
Last Modified
2026-09-26
Generated
2026-09-26
AI Q&A
2026-09-26
EPSS Evaluated
N/A
NVD
CVE-2026-100567
EUVD
EUVD-2026-87484

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
openclaw openclaw From 2026.4.5 (inc) to 2026.8.1 (exc)
openclaw openclaw 2026.8.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

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Executive Summary

OpenClaw is an agent gateway distributed as an npm package. The vulnerability exists in versions between 2026.4.5 and 2026.8.1. The Gateway validates a DNS resolution for a remote Chrome DevTools Protocol (CDP) hostname but later performs an independent DNS resolution during WebSocket and Playwright transports. This allows an attacker controlling the hostname or DNS answers to bypass security checks via DNS rebinding, potentially connecting to unauthorized addresses like loopback or private networks.

Detection Guidance

To detect this vulnerability, check if your OpenClaw version is between 2026.4.5 and 2026.8.1. Run 'npm list openclaw' to verify the installed version. If affected, inspect network logs for unexpected connections to loopback, private, or metadata addresses from OpenClaw processes.

Impact Analysis

The impact depends on the remote CDP configuration, DNS timing, and services accessible from the Gateway host. An attacker could exploit this to make the Gateway connect to restricted addresses, potentially leading to unauthorized access, data exfiltration, or further network compromise. The severity varies based on the exposed services and network policies.

Compliance Impact

This vulnerability could lead to unauthorized network access, potentially exposing sensitive data. For GDPR, it may violate Article 32 (security of processing) if personal data is accessed. For HIPAA, it could breach the Security Rule by allowing unauthorized access to protected health information.

Mitigation Strategies

Update OpenClaw to version 2026.8.1 or later to fix the vulnerability. As a temporary mitigation, disable hostname-based remote CDP endpoints or restrict them to trusted, stable infrastructure to prevent DNS rebinding attacks.

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