CVE-2026-66418 OpenClaw Dashboard v3.0.0 Stored XSS via Failed Login Username Field
Unauthenticated attackers can inject scripts via login attempts that execute in admin sessions, enabling privilege escalation and configuration changes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-66418?
CVE-2026-66418 is a critical cross-site scripting vulnerability in tugcantopaloglu openclaw-dashboard, published on 30 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-66418?
It affects 1 product.
Products include Tugcantopaloglu Openclaw Agent Dashboard.
How do I fix CVE-2026-66418?
No fix has been published for CVE-2026-66418 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-66418 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-66418 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in tugcantopaloglu openclaw-dashboard
Sources
Also known as GHSA-jgjm-xq9g-p8xp.