The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-5511-1 mosquitto security update
EUVD EUVD EUVD-2023-32063 The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.
Ubuntu USN Ubuntu USN USN-6492-1 Mosquitto vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 26 Jun 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-06-26T13:59:02.058Z

Reserved: 2023-03-15T00:00:00.000Z

Link: CVE-2023-28366

cve-icon Vulnrichment

Updated: 2024-08-02T12:38:25.296Z

cve-icon NVD

Status : Modified

Published: 2023-09-01T16:15:07.790

Modified: 2025-06-26T14:15:28.433

Link: CVE-2023-28366

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-09-01T00:00:00Z

Links: CVE-2023-28366 - Bugzilla

cve-icon OpenCVE Enrichment

No data.