CVE-2021-21296

Fleet is an open source osquery manager. In Fleet before version 3.7.0 a malicious actor with a valid node key can send a badly formatted request that causes the Fleet server to exit, resulting in denial of service. This is possible only while a live query is currently ongoing. We believe the impact of this vulnerability to be low given the requirement that the actor has a valid node key. There is no information disclosure, privilege escalation, or code execution. The issue is fixed in Fleet 3.7.0.

• CWE-400

• https://github.com/fleetdm/fleet/commit/f68f4238e83b45b2164e4ed05df14af0f06eaf40Patch, Third Party Advisory
• https://github.com/fleetdm/fleet/security/advisories/GHSA-xwh8-9p3f-3x45Third Party Advisory
• https://www.npmjs.com/package/fleetctlProduct, Third Party Advisory
• https://github.com/fleetdm/fleet/commit/f68f4238e83b45b2164e4ed05df14af0f06eaf40Patch, Third Party Advisory
• https://github.com/fleetdm/fleet/security/advisories/GHSA-xwh8-9p3f-3x45Third Party Advisory
• https://www.npmjs.com/package/fleetctlProduct, Third Party Advisory

Published

Feb 10, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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