All vulnerabilities
CVE-2026-102404

Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service

Elastic ElasticsearchDatabases
Open in ThreatlineRecord JSON
CVSS
6.5Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.31%Chance of exploitation activity in the next 30 days, higher than 22% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published6 Oct 2026Updated 6 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user can submit a specially crafted query that causes uncontrolled memory growth in the query processing engine, resulting in an out-of-memory condition that terminates the Elasticsearch node. The condition can be triggered repeatedly, including by queries embedded in shared resources, causing persistent cluster unavailability.

Text from CVE List

Affected versions 3

  • Elasticsearchaffected: 8.0.0 through 8.19.22CVE List
  • Elasticsearchaffected: 9.0.0 through 9.4.7CVE List
  • Elasticsearchaffected: 9.5.0 through 9.5.4CVE List

References 1