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CVE-2026-63144 (GCVE-0-2026-63144)

Vulnerability from cvelistv5 – Published: 2026-07-21 22:26 – Updated: 2026-07-22 13:27
VLAI
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via a specially crafted search request submitted by a low-privileged authenticated user. A user with read-level index access can submit a request that triggers unbounded recursive processing within the Elasticsearch query evaluation component, causing a fatal error that terminates the affected node. In single-node deployments, this results in complete service outage; in multi-node clusters, it causes repeated node restarts and sustained availability degradation.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 13:23 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Elastic Elasticsearch Affected: 9.4.0 , ≤ 9.4.3 (semver)
Affected: 9.3.0 , ≤ 9.3.7 (semver)
Affected: 8.19.0 , ≤ 8.19.18 (semver)
guessed Create a notification for this product.
Show details on NVD website
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