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.

Scoring

Severity

MEDIUM

CVSS base score

6.5

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS probability

0.47%

CWE

CWE-674

Published

2026-07-01

Last modified

2026-07-01

Affected products

• Elastic Elasticsearch
• Elastic Elasticsearch
• Elastic Elasticsearch

Weakness type

• CWE-674

Related vulnerabilities

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• CVE-2026-17440 — IBM App Connect Enterprise and IBM Integration Bus for z/OS Adapter nodes are vulnerable to multiple CVEs
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• CVE-2026-84851 — Uncontrolled recursion in the Ion reader in Amazon Ion-C before 1.1.6

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