CVE-2026-78607

HIGH CVSS 3.1: 7.1 EPSS 0.19%
Updated Sep 02, 2026
Elastic
Parameter Value
CVSS 7.1 (HIGH)
Affected Versions 8.0.0 — 9.4.4
Fixed In 8.19.19
Type CWE-862 (Missing Authorization)
Vendor Elastic
Public PoC No

Missing Authorization (CWE-862) in the Elasticsearch custom inference service can lead to information disclosure via Privilege Abuse (CAPEC-122). A user holding only inference execution privileges could cause outbound inference traffic to be directed to a destination of their choosing and could cause administrator-provisioned credentials to be exposed.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v3.1

Vulnerable Products 4

Configuration From (including) Up to (excluding)
Elastic Elasticsearch
cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
8.0.0 8.19.19
Elastic Elasticsearch
cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
9.0.0 9.3.8
Elastic Elasticsearch
cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
9.4.0 9.4.4
Elastic Elasticsearch
cpe:2.3:a:elastic:elasticsearch:9.5.0:*:*:*:*:*:*:*