CVE-2026-75851

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. A secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.9Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

ArcadeDB server (com.arcadedb:arcadedb-server) in versions 26.7.3 and earlier fails to propagate the authenticated principal to asynchronous command worker threads. When an HTTP command is submitted with awaitResponse:false, it executes on an async worker whose DatabaseContext has no bound user, causing the scripting authorization gate to become a no-op. A user with only read access to a single database can submit an asynchronous JavaScript (language=js) command via the /api/v1/command endpoint to run code with unrestricted host access (e.g., database.getSecurity().createUser) and create a server-wide administrator, escalating to full administrative control. Fixed in 26.8.1.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
61
EG Risk 61/100CISA SSVC

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
Severity99% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
36th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 18, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Sep 28, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

HTTP async command path bypasses scripting authorization gate, allowing reader to escalate to server admin · Advisory · ArcadeData/arcadedb · GitHub

https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-5j4x-3jfw-8xv3
generic

ArcadeDB before 26.8.1 Authentication Bypass via Async Command | Advisories | VulnCheck

https://www.vulncheck.com/advisories/arcadedb-before-authentication-bypass-via-async-command

Vendor Advisories for CVE-2026-75851(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 36× in last 7d / 191× 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 336 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-75851?
CVE-2026-75851 is a critical vulnerability published on August 18, 2026. ArcadeDB server (com.arcadedb:arcadedb-server) in versions 26.7.3 and earlier fails to propagate the authenticated principal to asynchronous command worker threads. When an HTTP command is submitted with awaitResponse:false, it executes on an async worker whose DatabaseContext has no bound user,…
When was CVE-2026-75851 disclosed?
CVE-2026-75851 was first published on August 18, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75851 actively exploited?
CVE-2026-75851 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75851?
CVE-2026-75851 has a CVSS base score of 9.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75851?
A fix for CVE-2026-75851 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75851 are linked in the Vendor Advisories panel on this page.

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