A flaw was found in the maestro gRPC broker. This vulnerability allows a remote attacker, with a valid client certificate, to bypass authentication. This bypass enables the attacker to subscribe to other consumers' event streams, leading to unauthorized information disclosure, or to publish forged agent status, which can compromise data integrity.
History

Tue, 06 Oct 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Maestro
Maestro maestro
Vendors & Products Maestro
Maestro maestro

Tue, 06 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 06 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 05 Oct 2026 20:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in the maestro gRPC broker. This vulnerability allows a remote attacker, with a valid client certificate, to bypass authentication. This bypass enables the attacker to subscribe to other consumers' event streams, leading to unauthorized information disclosure, or to publish forged agent status, which can compromise data integrity.
Title Maestro: maestro: grpc broker has no auth interceptor and client mtls is optional
First Time appeared Redhat
Redhat multicluster Engine
Weaknesses CWE-306
CPEs cpe:/a:redhat:multicluster_engine
Vendors & Products Redhat
Redhat multicluster Engine
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-10-05T19:55:49.523Z

Updated: 2026-10-06T14:49:48.215Z

Reserved: 2026-08-05T14:50:01.309Z

Link: CVE-2026-71297

cve-icon Vulnrichment

Updated: 2026-10-06T14:43:43.751Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-05T20:17:25.103

Modified: 2026-10-06T15:17:19.260

Link: CVE-2026-71297

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-05T18:00:00Z

Links: CVE-2026-71297 - Bugzilla