OpenClaw Dashboard v3.0.0 Stored XSS via Failed Login Username Field (CVE-2026-66418) | HOL Guard CVE

Critical · CVSS 9.3CVE-2026-66418

OpenClaw Dashboard v3.0.0 Stored XSS via Failed Login Username Field

Answer in brief

CVE-2026-66418 records a Critical severity (CVSS 9.3) vulnerability in OpenClaw Dashboard v3.0.0 Stored XSS via Failed Login Username Field. The current sources do not mark it as known exploited. The current feed maps tugcantopaloglu/openclaw-dashboard (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 30, 2026Updated Sep 24, 2026Source checked Sep 24, 2026First seen by HOL Sep 9, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.3
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps tugcantopaloglu/openclaw-dashboard (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:tugcantopaloglu:openclaw_agent_dashboard::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
tugcantopaloglu/openclaw-dashboardgeneric	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for tugcantopaloglu/openclaw-dashboard.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Jul 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 9, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.