CVE-2026-63263

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-07-22. 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 Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.

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
15%
KEV
Not listed

Published

July 21, 2026

Last Modified

August 3, 2026

Advisory Details (1)

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

Elasticsearch 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-74) - Security Announcements - Discuss the Elastic Stack

https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-74/388577

Vendor Advisories for CVE-2026-63263(2)

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 12× 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 153 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-63263?
CVE-2026-63263 is a medium vulnerability published on July 21, 2026. Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource…
When was CVE-2026-63263 disclosed?
CVE-2026-63263 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63263 actively exploited?
CVE-2026-63263 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 84.8% of all scored CVEs.
What is the CVSS score of CVE-2026-63263?
CVE-2026-63263 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-63263?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63263, 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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