CVE-2026-72657
Medium
Description
Authorization Bypass Through User-Controlled Key (CWE-639) in Fleet Server can lead to information disclosure via Manipulating User-Controlled Variables (CAPEC-77). The authorization decision for artifact downloads relied on a client-supplied value that was persisted without being validated against the server-side record of the requesting agent's assignment. An authenticated party in possession of a valid enrolled agent credential could therefore retrieve a policy the agent is not assigned to.
SeverityMedium
CVSS6.5
Exploit probability—
ProductElastic Fleet Server
PublishedAug 13, 2026
First seenAug 13, 2026
How to fix
Update
- elastic fleet_server8.19.20, 9.4.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| elastic fleet_server | 8.3.0 ≤ v < 8.19.20, 9.0.0 ≤ v < 9.4.5, 9.5.0 | 8.19.20, 9.4.5 |
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