Uncontrolled Resource Consumption Issue in Elasticsearch by Elastic
CVE-2026-94398

6.5MEDIUM

Key Information:

Vendor

Elastic
Status
Elastic
Vendor
CVE Published:
26 September 2026

What is CVE-2026-94398?

Elasticsearch has a vulnerability characterized by uncontrolled resource consumption, which may allow attackers to trigger excessive resource allocation. This condition can lead to service disruptions or denial of service, impacting the overall performance of the system. It's crucial for users to apply relevant security updates to mitigate this risk.

Affected Version(s)

Elasticsearch 8.12.0 <= 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

.