VULNERABILITY INTELLIGENCE

CVE-2023-28366

CVSS score7.5 HIGH
EPSS probability1.31%
CISA KEVNot currently listed
Published2023-09-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • CWE-401: Missing Release of Memory after Effective Lifetime

Primary references