Vulnerability · Published Jul 30, 2026 · Assigned by VulnCheck
CVE-2026-66418OpenClaw Dashboard v3.0.0 Stored XSS via Failed Login Username Field
Critical 9.3
In plain English
A critical-severity cross-site scripting in openclaw-dashboard from tugcantopaloglu. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| tugcantopaloglu | openclaw-dashboard | 3.0.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N