CVE-2026-40008

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-10. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache IoTDB. The pipe processor reads a fully qualified Java class name and instantiates it using Class.forName().newInstance() without any validation or allowlisting.

This issue affects Apache IoTDB: from 1.0.0 before 2.0.10.

Users are recommended to upgrade to version 2.0.10, which fixes the issue.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
46%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 10, 2026

Advisory Details (2)

Auto-updated Aug 22, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-40008: Apache IoTDB: Arbitrary Class Instantiation via Pipe Transfer RPC

http://www.openwall.com/lists/oss-security/2026/07/10/5
generic
https://lists.apache.org/thread/fm8cpvzbox2qqy99ztglm8wkk1nrg9ng

Vendor Advisories for CVE-2026-40008(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 51× in last 7d / 234× 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 296 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-40008?
CVE-2026-40008 is a critical vulnerability published on July 10, 2026. Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache IoTDB. The pipe processor reads a fully qualified Java class name and instantiates it using Class.forName().newInstance() without any validation or allowlisting. This issue affects Apache…
When was CVE-2026-40008 disclosed?
CVE-2026-40008 was first published in the National Vulnerability Database on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40008 actively exploited?
CVE-2026-40008 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.0% of all scored CVEs.
What is the CVSS score of CVE-2026-40008?
CVE-2026-40008 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-40008?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40008, 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.

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