CVE-2026-72645

EUVD-2026-58282
Memory Allocation with Excessive Size Value (CWE-789) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user holding only read privileges on a single index can submit one small, specially crafted search request that causes an excessively large memory allocation, exhausting the JVM heap and terminating the affected node.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
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: 33.83%
Affected Products (NVD)
VendorProductVersion
elasticelasticsearch
8.0.0 ≤
𝑥
< 8.19.20
elasticelasticsearch
9.0.0 ≤
𝑥
< 9.4.5
elasticelasticsearch
9.5.0 ≤
𝑥
< 9.5.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-9-5-1-security-update-esa-2026-116/389502