CVE-2026-72638

EUVD-2026-58284
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only low-privileged index creation permissions can submit a single request containing a specially crafted, malformed custom analysis definition that is resolved recursively without a cycle or depth check, exhausting the thread stack and terminating the affected node.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
elasticCNA
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
elasticelasticsearch
8.0.0 ≤
𝑥
≤ 8.19.19
CNA
elasticelasticsearch
9.0.0 ≤
𝑥
≤ 9.4.4
CNA
Common Weakness Enumeration
References
https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-119/389498