CVE-2026-63144 (GCVE-0-2026-63144)
Vulnerability from cvelistv5 – Published: 2026-07-21 22:26 – Updated: 2026-07-22 13:27
VLAI
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 13:23 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| 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 |
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Nomenclature
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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