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Vulnerabilities CVE-2026-66418

CVE-2026-66418

Critical
Open
TLP:CLEAR

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

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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.

Details

CVSS Score
9.3
EPSS Score
0.34%

26.6th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Confidence
90%
Published
Jul 30, 2026
Last Modified
Jul 31, 2026
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