Fleet before 4.83.0 contains a denial of service vulnerability that allows unauthenticated attackers to exhaust server memory by sending gzip-compressed request bodies. Attackers can send small, highly compressed requests with Content-Encoding: gzip to unauthenticated endpoints that expand during decoding, crashing the entire Fleet instance.
History

Mon, 19 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 17 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description Fleet before 4.83.0 contains a denial of service vulnerability that allows unauthenticated attackers to exhaust server memory by sending gzip-compressed request bodies. Attackers can send small, highly compressed requests with Content-Encoding: gzip to unauthenticated endpoints that expand during decoding, crashing the entire Fleet instance.
Title Fleet before 4.83.0 Denial of Service via Unbounded Gzip Decompression
First Time appeared Fleetdm
Fleetdm fleet
Weaknesses CWE-409
CPEs cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*
Vendors & Products Fleetdm
Fleetdm fleet
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-17T18:46:37.369Z

Updated: 2026-10-19T21:35:14.859Z

Reserved: 2026-10-17T12:19:42.358Z

Link: CVE-2026-111924

cve-icon Vulnrichment

Updated: 2026-10-19T21:35:11.150Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-17T19:16:35.257

Modified: 2026-10-19T22:17:05.060

Link: CVE-2026-111924

cve-icon Redhat

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