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Security Bulletin: IBM API Connect V5 is vulnerable to cross site scripting (XSS) (CVE-2020-4251)

Security Bulletin


IBM API Connect has addressed the following vulnerability.

Vulnerability Details

CVEID:   CVE-2020-4251
DESCRIPTION:   IBM API Connect 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.
CVSS Base score: 5.4
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
API ConnectIBM API Connect V5.0.0.0-



Affected Product

Addressed in VRMF
Remediation / First Fix

IBM API Connect Developer Portal

V5.0.0.0- iFixLI81534Addressed in IBM API Connect V5.0.8.8 iFix1 on or after May 12, 2020.

Developer Portal is impacted.

Follow this link and find the "Portal" package:

IBM API Connect Management Server

V5.0.0.0- iFix iFix2LI81534

Addressed in IBM API Connect V5.0.8.8 iFix2 on or after June 5, 2020.

Management Server is impacted.

Follow this link and find the "Management" package:

Workarounds and Mitigations


Get Notified about Future Security Bulletins




Change History

11 June 2020: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document Location


[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSMNED","label":"IBM API Connect"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"V5.0.0.0-","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
11 June 2020