Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-66418

CVE-2026-66418CRITICAL

tugcantopaloglu openclaw-dashboard — OpenClaw Dashboard v3.0.0 Stored XSS via Failed Login Username Field

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   A   H   H   N    9.3   .0063   48.5     —

AFFECTED
  Product             Versions  Fixed
  openclaw-dashboard  3.0.0 –   —

TIMELINE
  Jul 27  Reserved by VulnCheck
  Jul 30  Published (CNA: VulnCheck)
  Sep 3   EXPLOIT PUBLISHED — CVE-2026-66418 (tugcantopaloglu openclaw-dashboard). Public exploit reference added.

CWE-79 · CNA: VulnCheck · CVSS v4.0 · 3 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 27, 2026	Reserved	Reserved by VulnCheck
July 30, 2026	Published	Published (CNA: VulnCheck)
September 3, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-66418 (tugcantopaloglu openclaw-dashboard). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
tugcantopaloglu	openclaw-dashboard	—	3.0.0	—

Weaknesses

CWE-79

References (3)

https://github.com/theopaid/Unauthenticated-Stored-Cross-Site-Scripting-Leading-To-Administrator-Account-Takeover [vendor-advisory]
https://github.com/tugcantopaloglu/openclaw-dashboard [product]
https://www.vulncheck.com/advisories/openclaw-dashboard-stored-xss-via-failed-login-username-field [third-party-advisory]

Authoritative record: CVE-2026-66418 at cve.org

Vendors: tugcantopaloglu

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-66418 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.