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Case File

CVE-2020-13821

MEDIUM · CVSS 5.4 EPSS 0.53%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-08-26 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.4. It affects Java.

CVE
CVE-2020-13821
Severity
MEDIUM
CVSS
5.4
EPSS
0.53%
Java

Original NVD Description

An issue was discovered in HiveMQ Broker Control Center 4.3.2. A crafted clientid parameter in an MQTT packet (sent to the Broker) is reflected in the client section of the management console. The attacker's JavaScript is loaded in a browser, which can lead to theft of the session and cookie of the administrator's account of the Broker.