CVE-2026-40007

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-10. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.5Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Uncontrolled Recursion, Uncontrolled Resource Consumption vulnerability in Apache IoTDB. When pipe_air_gap_receiver_enabled=true, the IoTDB AirGap receiver's readLength method calls itself recursively each time it recognises the E-language prefix in socket data, with no depth limit. An unauthenticated attacker can send a stream of repeated E-language prefixes that drives the recursion arbitrarily deep, exhausting the receiver thread's JVM stack and raising StackOverflowError.

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
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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 (value × EchelonGraph’s weight)
Severity75% × 45%
The EG Score, 7.5 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 10, 2026

Last Modified

July 10, 2026

Advisory Details (2)

Auto-updated Jul 10, 2026
Fix named in the CVE record.
Web page

oss-security - CVE-2026-40007: Apache IoTDB: Unauthenticated unbounded recursion in IoTDB AirGap receiver's E-language prefix parser causes per-connection StackOverflowError

http://www.openwall.com/lists/oss-security/2026/07/10/4

Vendor Advisories for CVE-2026-40007(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 36× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 226 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 127 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  3. 2026-10-12 16:09 UTCEG score recompute
  4. 2026-10-11 19:52 UTCEG score recompute
  5. 2026-10-11 17:05 UTCEG score recompute
  6. 2026-10-11 14:32 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-10-01 15:55 UTCEG score recompute
  18. 2026-10-01 15:55 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-09-28 09:52 UTCEG score recompute
  21. 2026-09-28 09:52 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-09-24 11:19 UTCEG score recompute
Show 74 more
  1. 2026-09-24 11:19 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  2. 2026-09-23 05:49 UTCEG score recompute
  3. 2026-09-23 05:49 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  5. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  6. 2026-09-18 05:24 UTCEG score recompute
  7. 2026-09-18 05:24 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  8. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-09-13 23:44 UTCEG score recompute
  13. 2026-09-13 23:44 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  14. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-09-13 08:15 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  16. 2026-09-12 15:32 UTCEG score recompute
  17. 2026-09-12 15:32 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  18. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  19. 2026-09-12 03:07 UTCEG score recompute
  20. 2026-09-12 03:07 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  24. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  25. 2026-09-08 03:07 UTCEG score recompute
  26. 2026-09-08 03:07 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  27. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  28. 2026-09-06 13:58 UTCEG score recompute
  29. 2026-09-06 13:58 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  30. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  31. 2026-09-05 21:50 UTCEG score recompute
  32. 2026-09-05 21:50 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  33. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  34. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  35. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  36. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  37. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  38. 2026-08-30 19:08 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  39. 2026-08-30 06:40 UTCEG score recompute
  40. 2026-08-30 06:40 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  41. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  42. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  43. 2026-08-27 21:43 UTCEG score recompute
  44. 2026-08-27 21:42 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  45. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  46. 2026-08-27 00:52 UTCEG score recompute
  47. 2026-08-27 00:52 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  48. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  49. 2026-08-26 03:43 UTCEG score recompute
  50. 2026-08-26 03:43 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  51. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  52. 2026-08-25 10:01 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  53. 2026-08-24 20:18 UTCEG score recompute
  54. 2026-08-24 20:18 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  55. 2026-08-24 06:48 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  56. 2026-08-23 18:23 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  57. 2026-08-23 05:59 UTCEG score recompute
  58. 2026-08-23 05:59 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  59. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  60. 2026-08-22 17:33 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  61. 2026-08-22 05:07 UTCEG score recompute
  62. 2026-08-22 05:07 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  63. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  64. 2026-08-21 16:42 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  65. 2026-08-21 03:46 UTCEG score recompute
  66. 2026-08-21 03:46 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  67. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  68. 2026-08-20 15:13 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  69. 2026-08-20 01:36 UTCEG score recompute
  70. 2026-08-20 01:36 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  71. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  72. 2026-08-19 12:20 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5
  73. 2026-08-18 23:07 UTCEG score recompute
  74. 2026-08-18 23:07 UTCGHSA enrichmentGHSA-4644-hpfg-x44q · GitHub severity HIGH · GitHub CVSS 7.5

Frequently asked(5)

What is CVE-2026-40007?
CVE-2026-40007 is a high-severity vulnerability; its CVE record was published on July 10, 2026. Uncontrolled Recursion, Uncontrolled Resource Consumption vulnerability in Apache IoTDB. When pipeairgapreceiverenabled=true, the IoTDB AirGap receiver's readLength method calls itself recursively each time it recognises the E-language prefix in socket data, with no depth limit. An unauthenticated…
When was the CVE record for CVE-2026-40007 published?
The CVE record for CVE-2026-40007 was published on July 10, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 10, 2026; the record at its source may have been updated since.
Is CVE-2026-40007 actively exploited?
CVE-2026-40007 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-40007?
CVE-2026-40007 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-40007?
The CVE record for CVE-2026-40007 names the fix: "Users are recommended to upgrade to version 2.0.10, which fixes the issue." The vendor advisories EchelonGraph has for CVE-2026-40007 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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