CVE-2026-72636

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: 0.4%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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

Uncontrolled Recursion (CWE-674) in the Elasticsearch wildcard matching helper can lead to a denial of service via Excessive Allocation (CAPEC-130). The matcher used to resolve wildcard patterns against names is implemented recursively and had no bound on recursion depth or on the total number of match operations performed. A search request containing a wildcard pattern with a large number of wildcard groups, evaluated against a sufficiently long name, exhausts the thread stack. Elasticsearch treats a stack overflow as an unrecoverable condition and shuts the node down, so the request terminates the affected node rather than failing gracefully.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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 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-2026-133) - Security Announcements - Discuss the Elastic Stack

https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-133/389499

Vendor Advisories for CVE-2026-72636(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 11× in last 7d / 66× 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 133 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72636?
CVE-2026-72636 is a medium vulnerability published on August 13, 2026. Uncontrolled Recursion (CWE-674) in the Elasticsearch wildcard matching helper can lead to a denial of service via Excessive Allocation (CAPEC-130). The matcher used to resolve wildcard patterns against names is implemented recursively and had no bound on recursion depth or on the total number of…
When was CVE-2026-72636 disclosed?
CVE-2026-72636 was first published 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-2026-72636 actively exploited?
CVE-2026-72636 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72636?
CVE-2026-72636 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72636?
No fix for CVE-2026-72636 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-72636 are linked in the Vendor Advisories panel on this page.

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