UpHeron
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Servers and applications

CVE-2026-56145

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user with permission to execute EQL sequence queries against an index they control can send a specially crafted query that triggers excessive memory consumption, causing the Elasticsearch node to crash.

Severity
Medium 6.5
Published
21 Jul 2026
Last changed
7 Aug 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.19.18, 9.3.7, 9.4.4
Sources
NVD

Affected software

SoftwareAffected versions
ElasticsearchServers and applications · cpe:a:elastic:elasticsearch
  • From 8.0.0 before 8.19.18
  • From 9.0.0 before 9.3.7
  • From 9.4.0 before 9.4.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-56145
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-56145