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Security Bulletin: IBM API Connect is vulnerable to sensitive information leak (CVE-2020-4640)

Security Bulletin


IBM API Connect has addressed the following vulnerability.

Vulnerability Details

CVEID:   CVE-2020-4640
DESCRIPTION:   Certain IBM API Connect configurations can result in sensitive information in the URL fragment identifiers. This information can be cached in the intermediate nodes like proxy servers, cdn, logging platforms, etc. An attacker can make use of this information to perform attacks by impersonating a user.
CVSS Base score: 3.4
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
IBM API ConnectAPI Connect V10.0.1.0
IBM API ConnectV2018.4.1.0-2018.4.1.13


Affected ProductAddressed in VRMFAPARRemediation/First Fix
IBM API Connect 


Addressed in IBM API Connect V2018.4.1.15.

Management server is impacted.

Follow this link and find the "management" package.
IBM API Connect 


Addressed in IBM API Connect V10.0.1.1

Management server is impacted.

Follow this link and find the "management" package.

Workarounds and Mitigations


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Change History

February 2 2021: 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":"BU004","label":"Hybrid Cloud"},"Product":{"code":"SSMNED","label":"IBM API Connect"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"2018.4.1.0-2018.4.1.13,","Edition":""}]

Document Information

Modified date:
02 February 2021