CVE-2021-20366

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-13 · updated 2026-06-17
Weakness: CWE-79

Description

IBM Cloud Pak for Applications 4.3 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. IBM X-Force ID: 195037.

Affected products

IBM Cloud Pak for Applications: before 4.3.1 — fixed in 4.3.1

How to fix

Upgrade to a fixed version: IBM Cloud Pak for Applications 4.3.1. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/195037
https://www.ibm.com/support/pages/node/6471337
https://exchange.xforce.ibmcloud.com/vulnerabilities/195037
https://www.ibm.com/support/pages/node/6471337

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