CVE-2026-66418

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreHIGH confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-30. a secondary CVSS source baseline 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.3
EG Score
9.3(high)
EG Risk
58(Track*)
EG Risk 58/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity93% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

July 30, 2026

Last Modified

July 31, 2026

Advisory Details (3)

Auto-updated Aug 1, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

GitHub - theopaid/Unauthenticated-Stored-Cross-Site-Scripting-Leading-To-Administrator-Account-Takeover: Security Advisory: Unauthenticated Stored Cross-Site Scripting Leading To Administrator Account Takeover (openclaw-dashboard) · GitHub

https://github.com/theopaid/Unauthenticated-Stored-Cross-Site-Scripting-Leading-To-Administrator-Account-Takeover
generic

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

https://www.vulncheck.com/advisories/openclaw-dashboard-stored-xss-via-failed-login-username-field
generic

GitHub - tugcantopaloglu/openclaw-dashboard: 🔐 Secure, real-time monitoring dashboard for OpenClaw AI agents. Auth, TOTP MFA, cost tracking, live feed, memory browser and more. · GitHub

https://github.com/tugcantopaloglu/openclaw-dashboard

Vendor Advisories for CVE-2026-66418(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 52× in last 7d / 168× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 168 total refreshes for this CVE.

  1. 2026-08-21 09:10 UTCGHSA enrichment
  2. 2026-08-21 04:59 UTCGHSA enrichment
  3. 2026-08-21 00:48 UTCEG score recompute
  4. 2026-08-21 00:48 UTCGHSA enrichment
  5. 2026-08-20 22:56 UTCEPSS rescore
  6. 2026-08-20 20:36 UTCGHSA enrichment
  7. 2026-08-20 16:25 UTCGHSA enrichment
  8. 2026-08-20 12:14 UTCGHSA enrichment
  9. 2026-08-20 08:02 UTCGHSA enrichment
  10. 2026-08-20 03:51 UTCGHSA enrichment
  11. 2026-08-19 23:39 UTCGHSA enrichment
  12. 2026-08-19 19:28 UTCEG score recompute
  13. 2026-08-19 19:28 UTCGHSA enrichment
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 12:57 UTCGHSA enrichment
  16. 2026-08-19 08:44 UTCGHSA enrichment
  17. 2026-08-19 04:33 UTCGHSA enrichment
  18. 2026-08-19 00:15 UTCGHSA enrichment
  19. 2026-08-18 20:03 UTCGHSA enrichment
  20. 2026-08-18 15:52 UTCEG score recompute
  21. 2026-08-18 15:52 UTCGHSA enrichment
  22. 2026-08-18 13:48 UTCEPSS rescore
  23. 2026-08-18 09:43 UTCGHSA enrichment
  24. 2026-08-18 05:31 UTCGHSA enrichment
  25. 2026-08-18 01:01 UTCGHSA enrichment
Show 75 more
  1. 2026-08-17 20:13 UTCGHSA enrichment
  2. 2026-08-17 15:57 UTCEG score recompute
  3. 2026-08-17 15:57 UTCGHSA enrichment
  4. 2026-08-17 13:47 UTCEPSS rescore
  5. 2026-08-17 11:45 UTCGHSA enrichment
  6. 2026-08-17 07:33 UTCGHSA enrichment
  7. 2026-08-17 03:22 UTCGHSA enrichment
  8. 2026-08-16 23:11 UTCGHSA enrichment
  9. 2026-08-16 19:00 UTCEG score recompute
  10. 2026-08-16 19:00 UTCGHSA enrichment
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 14:42 UTCGHSA enrichment
  13. 2026-08-16 10:30 UTCGHSA enrichment
  14. 2026-08-16 06:19 UTCEG score recompute
  15. 2026-08-16 06:19 UTCGHSA enrichment
  16. 2026-08-16 02:08 UTCGHSA enrichment
  17. 2026-08-15 21:57 UTCGHSA enrichment
  18. 2026-08-15 17:46 UTCGHSA enrichment
  19. 2026-08-15 13:35 UTCGHSA enrichment
  20. 2026-08-15 09:21 UTCGHSA enrichment
  21. 2026-08-15 05:10 UTCEG score recompute
  22. 2026-08-15 05:10 UTCGHSA enrichment
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-15 00:58 UTCGHSA enrichment
  25. 2026-08-14 20:47 UTCGHSA enrichment
  26. 2026-08-14 16:36 UTCGHSA enrichment
  27. 2026-08-14 12:15 UTCGHSA enrichment
  28. 2026-08-14 08:04 UTCGHSA enrichment
  29. 2026-08-14 03:52 UTCGHSA enrichment
  30. 2026-08-13 23:41 UTCEG score recompute
  31. 2026-08-13 23:41 UTCGHSA enrichment
  32. 2026-08-13 22:00 UTCEPSS rescore
  33. 2026-08-13 19:29 UTCGHSA enrichment
  34. 2026-08-13 15:18 UTCGHSA enrichment
  35. 2026-08-13 11:05 UTCGHSA enrichment
  36. 2026-08-13 06:54 UTCGHSA enrichment
  37. 2026-08-13 02:40 UTCGHSA enrichment
  38. 2026-08-12 22:29 UTCGHSA enrichment
  39. 2026-08-12 18:17 UTCGHSA enrichment
  40. 2026-08-12 14:03 UTCEG score recompute
  41. 2026-08-12 14:03 UTCGHSA enrichment
  42. 2026-08-12 13:51 UTCEPSS rescore
  43. 2026-08-12 09:49 UTCGHSA enrichment
  44. 2026-08-12 05:38 UTCGHSA enrichment
  45. 2026-08-12 01:24 UTCGHSA enrichment
  46. 2026-08-11 21:13 UTCGHSA enrichment
  47. 2026-08-11 17:02 UTCEG score recompute
  48. 2026-08-11 17:02 UTCGHSA enrichment
  49. 2026-08-11 12:51 UTCGHSA enrichment
  50. 2026-08-11 08:40 UTCGHSA enrichment
  51. 2026-08-11 04:29 UTCGHSA enrichment
  52. 2026-08-11 00:18 UTCEG score recompute
  53. 2026-08-11 00:18 UTCGHSA enrichment
  54. 2026-08-11 00:00 UTCEPSS rescore
  55. 2026-08-10 20:07 UTCGHSA enrichment
  56. 2026-08-10 15:56 UTCGHSA enrichment
  57. 2026-08-10 11:24 UTCGHSA enrichment
  58. 2026-08-10 07:13 UTCGHSA enrichment
  59. 2026-08-10 03:02 UTCGHSA enrichment
  60. 2026-08-09 22:51 UTCGHSA enrichment
  61. 2026-08-09 18:40 UTCGHSA enrichment
  62. 2026-08-09 14:29 UTCEG score recompute
  63. 2026-08-09 14:29 UTCGHSA enrichment
  64. 2026-08-09 13:47 UTCEPSS rescore
  65. 2026-08-09 10:18 UTCGHSA enrichment
  66. 2026-08-09 06:07 UTCGHSA enrichment
  67. 2026-08-09 01:56 UTCGHSA enrichment
  68. 2026-08-08 21:45 UTCGHSA enrichment
  69. 2026-08-08 17:34 UTCEG score recompute
  70. 2026-08-08 17:34 UTCGHSA enrichment
  71. 2026-08-08 16:37 UTCEPSS rescore
  72. 2026-08-08 13:23 UTCGHSA enrichment
  73. 2026-08-08 09:12 UTCGHSA enrichment
  74. 2026-08-08 05:01 UTCGHSA enrichment
  75. 2026-08-08 00:50 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66418?
CVE-2026-66418 is a critical vulnerability published on July 30, 2026. 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…
When was CVE-2026-66418 disclosed?
CVE-2026-66418 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66418 actively exploited?
CVE-2026-66418 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 73.1% of all scored CVEs.
What is the CVSS score of CVE-2026-66418?
CVE-2026-66418 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-66418?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66418, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-66418

Explore →

Is Your Infrastructure Affected by CVE-2026-66418?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs