CVE-2021-41039

HIGH

Eclipse Mosquitto 1.6-2.0.11 - Denial of Service via MQTT v5 User-Property Flood

Title source: llm
STIX 2.1

Description

In versions 1.6 to 2.0.11 of Eclipse Mosquitto, an MQTT v5 client connecting with a large number of user-property properties could cause excessive CPU usage, leading to a loss of performance and possible denial of service.

References (2)

Core 2
Core References
Third Party Advisory vendor-advisory
https://www.debian.org/security/2023/dsa-5511
Exploit, Issue Tracking, Patch, Vendor Advisory
https://bugs.eclipse.org/bugs/show_bug.cgi?id=575314

Scores

CVSS v3 7.5
EPSS 0.0025
EPSS Percentile 48.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-1050
Status published
Products (1)
eclipse/mosquitto 1.6 - 2.0.11
Published Dec 01, 2021
Tracked Since Feb 18, 2026