---
id: CVE-2026-66418
title: >-
  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, whi…
summary: >-
  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, whi…
severity: critical
cvss: 9.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
published: '2026-07-30'
updated: '2026-07-31'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-66418'
references:
  - url: >-
      https://github.com/theopaid/Unauthenticated-Stored-Cross-Site-Scripting-Leading-To-Administrator-Account-Takeover
    label: disclosure@vulncheck.com
  - url: 'https://github.com/tugcantopaloglu/openclaw-dashboard'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openclaw-dashboard-stored-xss-via-failed-login-username-field
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/theopaid/Unauthenticated-Stored-Cross-Site-Scripting-Leading-To-Administrator-Account-Takeover
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - exploit-available
  - cve.org
epss: 0.00633
epssPercentile: 0.4813
ingestedAt: '2026-08-01T22:15:46.378Z'
exploits:
  github: 1
  githubRepos:
    - >-
      https://github.com/theopaid/CVE-2026-66418-OpenClaw-Dashboard-v3.0.0-Stored-XSS-via-Failed-Login-Username-Field
  checkedAt: '2026-09-26T09:05:55.818Z'
exploitAvailable: true
vendor: tugcantopaloglu
product: openclaw-dashboard
affected:
  - openclaw-dashboard 3.0.0
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-07-31T23:11:18.614582Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.