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Security Bulletin: IBM Rational Developer for i is vulnerable to a phishing attack due to a flaw in follow-redirects (CVE-2023-26159).

Security Bulletin


IBM Rational Developer for i contains Code Coverage functionality which has a browser interface. The browser interface utilizes follow-redirects which could allow a remote attacker to conduct phishing attacks(CVE-2023-26159). This bulletin identifies the steps to take to address the vulnerability as described in the remediation/fixes section.

Vulnerability Details

CVEID:   CVE-2023-26159
DESCRIPTION:   follow-redirects could allow a remote attacker to conduct phishing attacks, caused by an open redirect vulnerability. An attacker could exploit this vulnerability using a specially crafted URL to redirect a victim to arbitrary Web sites.
CVSS Base score: 6.1
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Rational Developer for i9.8.0.0 -


The issue can be fixed by loading an interim fix. 

IBM Rational Developer for i9.8.0.0 -

The interim fix for IBM Rational Developer for i is available at Downloads.

Install the update:

  • Start IBM Rational Developer for i
  • Select `Help>Install New Software`
  • Click `Add`
  • Specify a name
  • Click `Archive`, browse to the file downloaded, select the file, and click `Open`
  • Click `Add`
  • Select the interim fix shown and follow the steps in the wizard

Workarounds and Mitigations


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Change History

09 Feb 2024: 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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location


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Document Information

Modified date:
09 February 2024