CVE-2026-26061

Fleet is open source device management software. Prior to 4.81.0, Fleet contained multiple unauthenticated HTTP endpoints that read request bodies without enforcing a size limit. An unauthenticated attacker could exploit this behavior by sending large or repeated HTTP payloads, causing excessive memory allocation and resulting in a denial-of-service (DoS) condition. Version 4.81.0 patches the issue.

Affected products

Envoy, Fleet, Nginx

Fleetdm Fleet

< 4.81.0

Fix

Available

CVSS 4.0

8.7 HIGH

CVSS 3.1

7.5 HIGH

EPSS

0.4% (36th percentile)

Weakness

CWE-770

NVD status

Analyzed

Published

2026-03-27

No exploit for CVE-2026-26061 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.