CVE-2026-72685
Published:August 13, 2026
Updated:August 31, 2026
A flaw in Elasticsearch allows a low-privileged authenticated user who can index documents to submit a single small document containing a crafted user-supplied input. Processing one such document occupies a worker thread from a bounded pool for a disproportionate amount of time, degrading the availability of indexing operations on the affected node.
Affected Packages
https://github.com/elastic/elasticsearch.git (GITHUB):
Affected version(s) >=v9.0.0 <v9.4.5Fix Suggestion:
Update to version v9.4.5https://github.com/elastic/elasticsearch.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.19.20Fix Suggestion:
Update to version v8.19.20org.elasticsearch:elasticsearch (JAVA):
Affected version(s) >=9.0.0 <9.4.5Fix Suggestion:
Update to version 9.4.5org.elasticsearch:elasticsearch-x-content (JAVA):
Affected version(s) >=8.0.0 <8.19.20Fix Suggestion:
Update to version 8.19.20org.elasticsearch:elasticsearch-x-content (JAVA):
Affected version(s) >=9.0.0 <9.4.5Fix Suggestion:
Update to version 9.4.5org.elasticsearch:elasticsearch (JAVA):
Affected version(s) >=8.0.0 <8.19.20Fix Suggestion:
Update to version 8.19.20Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
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
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Inefficient Algorithmic Complexity
EPSS
Base Score:
0.26