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Fencer Vulns
medium 6.5

CVE-2026-63136 json

Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service

published 2026-07-21 3 mo ago modified 2026-10-24 15 d ago also BIT-elasticsearch-2026-63136 , EUVD-2026-46404

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits
0
none known

Summary

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A user with search privileges can submit a specially crafted search request that causes a data node to exhaust available heap memory, resulting in node unavailability and cluster degradation. An attacker could leverage this vulnerability to cause cluster downtime requiring manual intervention to restore service.

Patch / fix

  • bitnami elasticsearch 8.19.15, 9.2.9, 9.3.4
  • elastic elasticsearch 8.19.15, 9.2.9, 9.3.4
  • elasticsearch elasticsearch 8.19.15, 9.2.9, 9.3.4
  • org.elasticsearch elasticsearch 8.19.15, 9.2.9, 9.3.4

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami elasticsearch
>=8.0.0, <8.19.15
>=9.0.0, <9.2.9
>=9.4.0, <9.3.4
8.19.15
9.2.9
9.3.4

Affected products

  • Elastic Elasticsearch

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.