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Servers and applications

CVE-2026-56148

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted query that causes excessive resource consumption while the request is processed, which may render the affected node unavailable.

Severity
Medium 6.5
Published
1 Jul 2026
Last changed
2 Jul 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.19.17, 9.3.6, 9.4.3
Sources
NVD

Affected software

SoftwareAffected versions
ElasticsearchServers and applications · cpe:a:elastic:elasticsearch
  • From 8.0.0 before 8.19.17
  • From 9.0.0 before 9.3.6
  • From 9.4.0 before 9.4.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-56148
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-56148