CVE-2026-66418

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

CRITICAL
9.3
CVSS Score
Published: July 30, 2026 at 08:55 PM UTC
Updated: October 23, 2026 at 10:10 PM UTC
1 product affected across 1 vendorOpenclaw Agent Dashboard

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Severity
CRITICAL9.3
Exploit prediction
EPSS 0.6%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.3CRITICALVulnCheck
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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