Elasticsearch Vulnerability Affects Low-Privileged Users
CVE-2026-72685

4.3MEDIUM

Key Information:

Vendor

Elastic
Status
Elastic
Vendor
CVE Published:
13 August 2026

What is CVE-2026-72685?

A vulnerability in Elasticsearch permits low-privileged authenticated users, capable of indexing documents, to manipulate the system by submitting a small, crafted document. This input consumes a worker thread from a limited pool for an extended period, leading to decreased availability for indexing operations on the impacted node, affecting overall system performance.

Affected Version(s)

Elasticsearch 8.0.0 <= 8.19.19

Elasticsearch 9.0.0 <= 9.4.4

References

https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-...

CVSS V3.1

Score:
4.3
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

.