CVE-2026-78607
Medium
Description
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Elasticsearch
PublishedSep 1, 2026
First seenSep 1, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- elastic elasticsearch8.19.19, 9.3.8, 9.4.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| elastic elasticsearch | 8.0.0 ≤ v < 8.19.19, 9.0.0 ≤ v < 9.3.8, 9.4.0 ≤ v < 9.4.4, 9.5.0 | 8.19.19, 9.3.8, 9.4.4 |
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