CVE-2026-63144
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Elastic | Elasticsearch | 9.4.0 <= 9.4.3 | affected |
| Elastic | Elasticsearch | 9.3.0 <= 9.3.7 | affected |
| Elastic | Elasticsearch | 8.19.0 <= 8.19.18 | affected |
Weaknesses
- CWE-674: CWE-674 Uncontrolled Recursion
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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