CVE-2026-66418

Received Received - Intake

Stored XSS in OpenClaw Dashboard via Audit Log Injection

Publication date: 2026-07-30

Last updated on: 2026-07-30

Assigner: VulnCheck

Description

OpenClaw Dashboard v3.0.0 contains a stored cross-site scripting vulnerability that allows unauthenticated remote attackers to inject arbitrary HTML and script payloads by submitting a crafted username in a failed login POST request, which is recorded verbatim in the audit log. When an administrator opens the notification panel, the unescaped log entry is rendered via innerHTML with a permissive Content-Security-Policy allowing inline event handlers, enabling the attacker-supplied payload to execute in the administrator's session and interact with authenticated endpoints including agent instruction file editing and configuration changes.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-30

Last Modified

2026-07-30

Generated

2026-07-31

AI Q&A

2026-07-31

EPSS Evaluated

N/A

NVD

CVE-2026-66418

Affected Vendors & Products

Vendor	Product	Version / Range
openclaw	dashboard	3.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

OpenClaw Dashboard v3.0.0 has a stored cross-site scripting (XSS) flaw. Unauthenticated attackers can inject malicious scripts by submitting a crafted username during a failed login attempt. The payload is stored in the audit log and executed when an admin views the notification panel, due to improper input sanitization and a weak Content-Security-Policy.

Detection Guidance

Check OpenClaw Dashboard v3.0.0 logs for failed login attempts with unusual usernames containing HTML or script payloads. Inspect audit logs for unescaped entries that may render in the notification panel.

Impact Analysis

An attacker could steal session cookies, perform actions as the admin (e.g., edit agent files or change configurations), or take over the dashboard. Since the payload executes in the admin's browser, it grants significant control over the system.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR (data protection) and HIPAA (health data privacy). It undermines security controls required by these regulations, potentially resulting in legal penalties or reputational damage.

Mitigation Strategies

Upgrade OpenClaw Dashboard to a patched version if available. Sanitize usernames in login attempts to prevent XSS payloads. Review and restrict access to audit logs containing user input.

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