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CVE

CVE-2026-66418

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

CVE-2026-66418

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

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66418.json, https://github.com/theopaid/Unauthenticated-Stored-Cross-Site-Scripting-Leading-To-Administrator-Account-Takeover, https://nvd.nist.gov/vuln/detail/CVE-2026-66418, https://www.vulncheck.com/advisories/openclaw-dashboard-stored-xss-via-failed-login-username-field, https://github.com/tugcantopaloglu/openclaw-dashboard

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00511%
EPSS Percentile
0.41884%
Introduced Version
b08c0b7cd4f6172c5824dff4e643b0b7950ca603
Fix Available

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