CVE-2026-72685
Medium
Description
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.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Elasticsearch
PublishedAug 13, 2026
First seenAug 13, 2026
Weakness typeCWE-407CWE-407
How to fix
Update
- elastic elasticsearch8.19.20, 9.4.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| elastic elasticsearch | 8.0.0 ≤ v < 8.19.20, 9.0.0 ≤ v < 9.4.5 | 8.19.20, 9.4.5 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.