CVE-2026-72657
Authorization Bypass Through User-Controlled Key in Fleet Server Leading to Information Disclosure
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | elastic |
| Product | fleet server |
| Published | Aug 13, 2026 |
| Last Updated | Aug 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
Elastic / Fleet Server
8.3.0 ≤ 8.19.19 9.0.0 ≤ 9.4.4 9.5.0