Incorrect Authorization (CWE-863) in Fleet Server can lead to a denial of service of agent upload operations via Privilege Abuse (CAPEC-122). Fleet Server does not correctly verify session ownership during multi-part data upload operations, allowing any authenticated agent to interfere with the active upload sessions belonging to other enrolled agents.
History

Thu, 03 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:elastic:fleet_server:*:*:*:*:*:*:*:*

Thu, 03 Sep 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Elastic
Elastic fleet Server
Vendors & Products Elastic
Elastic fleet Server

Wed, 02 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 02 Sep 2026 10:45:00 +0000

Type Values Removed Values Added
Description Incorrect Authorization (CWE-863) in Fleet Server can lead to a denial of service of agent upload operations via Privilege Abuse (CAPEC-122). Fleet Server does not correctly verify session ownership during multi-part data upload operations, allowing any authenticated agent to interfere with the active upload sessions belonging to other enrolled agents.
Title Incorrect Authorization in Fleet Server Leading to Denial of Service of Agent Upload Operations
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: elastic

Published:

Updated: 2026-09-02T15:58:11.187Z

Reserved: 2026-08-24T21:13:45.972Z

Link: CVE-2026-78587

cve-icon Vulnrichment

Updated: 2026-09-02T15:50:01.580Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-02T15:17:40.190

Modified: 2026-09-03T19:11:53.153

Link: CVE-2026-78587

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T10:45:04Z