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Security Bulletin: IBM Test Accelerator for Z uses source-map-js which is vulnerable to CVE-2026-93749

Security Bulletin


Summary

IBM Test Accelerator for Z uses source-map-js which is vulnerable to CVE-2026-93749. This security bulletin provides details about the vulnerability and the corresponding remediation.

Vulnerability Details

CVEID:   CVE-2026-93749
DESCRIPTION:   source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the service from handling other requests.
CWE:   CWE-1284: Improper Validation of Specified Quantity in Input
CVSS Source:   disclosure@vulncheck.com
CVSS Base score:   7.5
CVSS Vector:   (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

 

Affected Product(s)Version(s)
IBM Test Accelerator for Z - Early Development Testing Eclipse2.8.5 and below
IBM Test Accelerator for Z - Early Development Testing VS Code3.0.1 and below
IBM Test Accelerator for Z - On-demand Environment

3.0.0

2.8.5 and below

 

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now. 

 

Product(s)Version(s) number and/or range Remediation/Fix/Instructions
IBM Test Accelerator for Z - Early Development Testing Eclipse2.8.5 and belowDownload v2.8.6 or later from Fix Central
IBM Test Accelerator for Z - Early Development Testing VS Code3.0.1 and belowDownload v3.0.2 or later from MS VS Marketplace
IBM Test Accelerator for Z - On-demand Environment

3.0.0

2.8.5 and below

Download v3.1.0 or later from Passport Advantage

Download 2.8.6 or later from Fix Central

 

  

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

 

 

Acknowledgement

Change History

09 Nov 2026: 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.

Disclaimer

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

Worldwide

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Document Information

Modified date:
08 November 2026

Initial Publish date:
09 November 2026

UID

ibm17295948