CVE-2021-20392

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-05-14 · updated 2026-06-17
Weakness: CWE-79

Description

IBM QRadar User Behavior Analytics 1.0.0 through 4.0.1 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

Affected products

IBM QRadar User Behavior Analytics: from 1.0.0 before 4.1.0 — fixed in 4.1.0

How to fix

Upgrade to a fixed version: IBM QRadar User Behavior Analytics 4.1.0. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/196000
https://www.ibm.com/support/pages/node/6453105
https://exchange.xforce.ibmcloud.com/vulnerabilities/196000
https://www.ibm.com/support/pages/node/6453105

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