CVE-2026-34388 — Fleet vulnerable to Denial of Service via unhandled gRPC log type in launcher endpoint

CVE-2026-34388

Fleet vulnerable to Denial of Service via unhandled gRPC log type in launcher endpoint PUBLISHED

Description (CNA)

Fleet is open source device management software. Prior to 4.81.0, a denial-of-service vulnerability in Fleet's gRPC Launcher endpoint allows an authenticated host to crash the entire Fleet server process by sending an unexpected log type value. The server terminates immediately, disrupting all connected hosts, MDM enrollments, and API consumers. Version 4.81.0 patches the issue.

Affected (CNA)

Vendor / product	Versions
fleetdm / fleet	affected < 4.81.0

CWE

CWE-703

References

https://github.com/fleetdm/fleet/security/advisories/GHSA-w254-4hp5-7cvv

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.