Uncontrolled Resource Consumption in Elasticsearch by Elastic
CVE-2026-94399

6.5MEDIUM

Key Information:

Vendor

Elastic
Status
Elastic
Vendor
CVE Published:
26 September 2026

What is CVE-2026-94399?

An uncontrolled resource consumption vulnerability exists in Elasticsearch, which may allow attackers to exploit excessive resource allocation. This leads to performance degradation or denial of service, impacting application availability. Proper configurations and resource management practices can mitigate these risks.

Affected Version(s)

Elasticsearch 8.0.0 <= 8.19.21

Elasticsearch 9.0.0 <= 9.4.6

Elasticsearch 9.5.0 <= 9.5.3

References

https://discuss.elastic.co/t/elasticsearch-8-19-22-9-4-7-...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.