CVE-2026-72638

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-13. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only low-privileged index creation permissions can submit a single request containing a specially crafted, malformed custom analysis definition that is resolved recursively without a cycle or depth check, exhausting the thread stack and terminating the affected node.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 13, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Aug 13, 2026
No patch confirmed yet.
generic

Elasticsearch 8.19.20, 9.4.5 Security Update (ESA-2026-119) - Security Announcements - Discuss the Elastic Stack

https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-119/389498

Vendor Advisories for CVE-2026-72638(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 16× in last 7d / 73× 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.

  1. 2026-09-19 04:33 UTCEG score recompute
  2. 2026-09-19 04:33 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 02:15 UTCEG score recompute
  5. 2026-09-18 02:15 UTCGHSA enrichment
  6. 2026-09-16 23:58 UTCEG score recompute
  7. 2026-09-16 23:58 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 19:31 UTCEG score recompute
  11. 2026-09-15 19:31 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-14 16:21 UTCEG score recompute
  14. 2026-09-14 16:21 UTCGHSA enrichment
  15. 2026-09-13 14:04 UTCEG score recompute
  16. 2026-09-13 14:04 UTCGHSA enrichment
  17. 2026-09-12 15:02 UTCEPSS rescore
  18. 2026-09-12 11:46 UTCEG score recompute
  19. 2026-09-12 11:46 UTCGHSA enrichment
  20. 2026-09-11 14:53 UTCEPSS rescore
  21. 2026-09-11 09:29 UTCEG score recompute
  22. 2026-09-11 09:29 UTCGHSA enrichment
  23. 2026-09-10 09:35 UTCEPSS rescore
  24. 2026-09-10 07:11 UTCGHSA enrichment
  25. 2026-09-09 04:53 UTCEG score recompute
Show 73 more
  1. 2026-09-09 04:53 UTCGHSA enrichment
  2. 2026-09-08 22:01 UTCEPSS rescore
  3. 2026-09-07 16:29 UTCEG score recompute
  4. 2026-09-07 16:29 UTCGHSA enrichment
  5. 2026-09-06 13:48 UTCEPSS rescore
  6. 2026-09-06 05:57 UTCEG score recompute
  7. 2026-09-06 05:56 UTCGHSA enrichment
  8. 2026-09-05 03:38 UTCEG score recompute
  9. 2026-09-05 03:38 UTCGHSA enrichment
  10. 2026-09-04 05:07 UTCEPSS rescore
  11. 2026-09-04 01:21 UTCGHSA enrichment
  12. 2026-09-02 23:02 UTCEG score recompute
  13. 2026-09-02 23:02 UTCGHSA enrichment
  14. 2026-09-02 14:12 UTCEPSS rescore
  15. 2026-09-01 14:30 UTCEG score recompute
  16. 2026-09-01 14:30 UTCGHSA enrichment
  17. 2026-09-01 13:54 UTCEPSS rescore
  18. 2026-09-01 04:40 UTCEPSS rescore
  19. 2026-09-01 04:40 UTCEPSS rescore
  20. 2026-09-01 00:59 UTCGHSA enrichment
  21. 2026-08-30 22:41 UTCEG score recompute
  22. 2026-08-30 22:41 UTCGHSA enrichment
  23. 2026-08-30 19:18 UTCEPSS rescore
  24. 2026-08-30 19:17 UTCEPSS rescore
  25. 2026-08-30 01:22 UTCEPSS rescore
  26. 2026-08-29 20:24 UTCEG score recompute
  27. 2026-08-29 20:24 UTCGHSA enrichment
  28. 2026-08-28 21:42 UTCEPSS rescore
  29. 2026-08-28 15:55 UTCGHSA enrichment
  30. 2026-08-28 03:26 UTCEG score recompute
  31. 2026-08-28 03:26 UTCGHSA enrichment
  32. 2026-08-27 00:57 UTCEG score recompute
  33. 2026-08-27 00:57 UTCGHSA enrichment
  34. 2026-08-26 14:47 UTCEPSS rescore
  35. 2026-08-25 22:39 UTCEG score recompute
  36. 2026-08-25 22:39 UTCGHSA enrichment
  37. 2026-08-25 13:49 UTCEPSS rescore
  38. 2026-08-24 20:21 UTCEG score recompute
  39. 2026-08-24 20:21 UTCGHSA enrichment
  40. 2026-08-23 18:04 UTCEG score recompute
  41. 2026-08-23 18:04 UTCGHSA enrichment
  42. 2026-08-23 00:19 UTCEPSS rescore
  43. 2026-08-22 15:47 UTCEG score recompute
  44. 2026-08-22 15:47 UTCGHSA enrichment
  45. 2026-08-21 23:49 UTCEPSS rescore
  46. 2026-08-21 13:30 UTCEG score recompute
  47. 2026-08-21 13:29 UTCGHSA enrichment
  48. 2026-08-20 22:56 UTCEPSS rescore
  49. 2026-08-20 11:07 UTCEG score recompute
  50. 2026-08-20 11:07 UTCGHSA enrichment
  51. 2026-08-19 17:04 UTCEPSS rescore
  52. 2026-08-19 08:50 UTCEG score recompute
  53. 2026-08-19 08:49 UTCGHSA enrichment
  54. 2026-08-18 13:49 UTCEPSS rescore
  55. 2026-08-18 13:49 UTCEPSS rescore
  56. 2026-08-18 06:31 UTCEG score recompute
  57. 2026-08-18 06:31 UTCGHSA enrichment
  58. 2026-08-17 13:47 UTCEPSS rescore
  59. 2026-08-17 04:14 UTCEG score recompute
  60. 2026-08-17 04:14 UTCGHSA enrichment
  61. 2026-08-16 14:56 UTCEPSS rescore
  62. 2026-08-16 14:56 UTCEPSS rescore
  63. 2026-08-16 02:15 UTCEPSS rescore
  64. 2026-08-16 01:57 UTCEG score recompute
  65. 2026-08-16 01:57 UTCGHSA enrichment
  66. 2026-08-15 01:31 UTCEPSS rescore
  67. 2026-08-14 23:40 UTCEG score recompute
  68. 2026-08-14 23:40 UTCGHSA enrichment
  69. 2026-08-13 21:22 UTCEG score recompute
  70. 2026-08-13 20:37 UTCEG score recompute
  71. 2026-08-13 20:21 UTCEG score recompute
  72. 2026-08-13 19:22 UTCEG score recompute
  73. 2026-08-13 19:21 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-72638?
CVE-2026-72638 is a medium vulnerability published on August 13, 2026. Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only low-privileged index creation permissions can submit a single request containing a specially crafted, malformed custom analysis definition that…
When was CVE-2026-72638 disclosed?
CVE-2026-72638 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72638 actively exploited?
CVE-2026-72638 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 77.5% of all scored CVEs.
What is the CVSS score of CVE-2026-72638?
CVE-2026-72638 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-72638?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72638, 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

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