CVE-2026-72645

Summary

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.

Affected Software

VendorProductVersion RangeStatus
ElasticElasticsearch8.0.0 <= 8.19.19affected
ElasticElasticsearch9.0.0 <= 9.4.4affected
ElasticElasticsearch9.5.0affected

Weaknesses

  • CWE-789: CWE-789 Memory Allocation with Excessive Size Value

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References