CVSS 3.1 Score 7.5 of 10 (high)


Published Sep 1, 2023
Updated: Jan 7, 2024
CWE ID 401


CVE-2023-28366 is a vulnerability that affects the broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16. It is a memory leak vulnerability that can be exploited remotely when a client sends multiple QoS 2 (Quality of Service) messages with duplicate message IDs and fails to respond to PUBREC commands. This vulnerability occurs due to mishandling of EAGAIN from the libc send function. The potential danger this vulnerability poses to an organization is high, with a base severity rating of HIGH and a base score of 7.5 according to NVD (National Vulnerability Database). To remediate this vulnerability, organizations should update their Eclipse Mosquitto installation to version 2.0.16 or later, which includes the necessary fix for the memory leak issue.

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