DNS Rebinding Vulnerability in OpenClaw: SSRF Hostname Validation Bypass
Summary
GHSA-xq94-r468-qwgj: OpenClaw: Browser SSRF hostname validation could be bypassed by DNS rebinding. Affects openclaw versions < 2026.4.10. Fixed in 2026.4.10. How to fix ↓
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Background
OpenClaw is an open-source package available on npm that facilitates browser-based interactions and navigation. It is designed to enhance web applications by providing a structured way to handle browser requests. However, it has been found to be vulnerable to a DNS rebinding attack, which can allow malicious actors to bypass hostname validation, leading to potential Server-Side Request Forgery (SSRF) exploits.
Vulnerability Detail
The vulnerability arises from inadequate hostname validation in OpenClaw, which can be exploited through DNS rebinding techniques. This allows an attacker to manipulate DNS responses to redirect requests to unauthorized servers, potentially leading to data leakage or unauthorized actions on behalf of the user. The flaw is particularly concerning as it undermines the browser's navigation policy, which is supposed to ensure that requests are only made to allowed hosts. The technical fix involves tightening the hostname validation process to ensure that only whitelisted URLs are accepted, preventing unauthorized access.
How To Fix
Latest published version: 2026.10.6 as of 22 Oct 2026
npm install openclaw@2026.10.6Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
2026.4.10
This is the first release that contains the fix.
npm install openclaw@2026.4.10Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to update to the patched version as soon as possible.
Conclusion
The OpenClaw package is vulnerable to a DNS rebinding attack that can compromise hostname validation, leading to potential SSRF exploits. Users are strongly advised to upgrade to version 2026.4.10 or newer to secure their applications against this vulnerability. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
See every vulnerability recorded for openclaw →
FAQ
The vulnerability allows DNS rebinding attacks that can bypass hostname validation, leading to potential SSRF exploits.
You can check if your application is affected by using Vulert, which monitors vulnerabilities in open-source packages. Visit Vulert Scanner to analyze your package-lock.json.
While there are no specific workarounds, it is crucial to prioritize updating to the patched version to mitigate risks.
The CVSS score for this vulnerability is 6.3, indicating a moderate level of severity.
The vulnerability was reported by @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer.
References
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