CVE-2026-26316
Authentication Bypass in OpenClaw BlueBubbles Plugin via Loopback Trust
Publication date: 2026-02-19
Last updated on: 2026-02-24
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| openclaw | openclaw | to 2026.2.13 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-863 | The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the BlueBubbles iMessage channel plugin for OpenClaw, a personal AI assistant. Before version 2026.2.13, the plugin could accept webhook requests as authenticated solely based on the TCP peer address being loopback (such as 127.0.0.1 or ::1), even if the configured webhook secret was missing or incorrect.
This means that if BlueBubbles is installed and enabled, an attacker or process on the local machine could send webhook requests that would be trusted without proper authentication.
The default iMessage integration is not affected unless BlueBubbles is specifically installed and enabled.
How can this vulnerability impact me? :
The vulnerability allows unauthorized webhook requests to be accepted as authenticated if they originate from the loopback address, bypassing the webhook secret authentication.
This can lead to unauthorized actions or commands being executed via the webhook interface, potentially compromising the integrity of the system or the AI assistant's operations.
Since the CVSS score indicates a high impact on integrity (7.5 base score with high impact on integrity), attackers could manipulate or inject malicious data or commands.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should upgrade OpenClaw to version 2026.2.13 or later, which contains a patch addressing the issue.
Additionally, set a non-empty BlueBubbles webhook password to ensure authentication is properly enforced.
Avoid deployments where a public-facing reverse proxy forwards requests to a loopback-bound Gateway without strong upstream authentication.