CVE-2026-56145
Published:July 21, 2026
Updated:August 04, 2026
Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user with permission to execute EQL sequence queries against an index they control can send a specially crafted query that triggers excessive memory consumption, causing the Elasticsearch node to crash.
Affected Packages
https://github.com/elastic/elasticsearch.git (GITHUB):
Affected version(s) >=v9.4.0 <v9.4.4Fix Suggestion:
Update to version v9.4.4https://github.com/elastic/elasticsearch.git (GITHUB):
Affected version(s) >=v9.0.0 <v9.3.7Fix Suggestion:
Update to version v9.3.7https://github.com/elastic/elasticsearch.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.19.18Fix Suggestion:
Update to version v8.19.18Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption
EPSS
Base Score:
0.29