What is CVE-2020-13821?

CVE-2020-13821 is a medium-severity vulnerability in Hivemq Broker Control Center, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-08-26.

How severe is CVE-2020-13821?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Hivemq Broker Control Center

CVE-2020-13821

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (41.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Hivemq Broker_control_center — versions 4.3.2
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2020-13821?: CVE-2020-13821 is a medium-severity vulnerability in Hivemq Broker Control Center, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-08-26.
How severe is CVE-2020-13821?: Medium severity. CVSS v3 base score is 5.4 out of 10.