Db2 on Cloud Pak for Data and Db2 Warehouse on Cloud Pak for Data vulnerability

IBM Db2 on Cloud Pak for Data and Db2 Warehouse on Cloud Pak for Data versions 4.8, 5.0, 5.1, 5.2, and 5.3 could allow an authenticated user to bypass client-side validation and manipulate input data using man in the middle techniques.

Published 22 Jun 2026Updated 26 Sep 20261 sources
CVSS 5.3

What happened

IBM Db2 on Cloud Pak for Data and Db2 Warehouse on Cloud Pak for Data versions 4.8, 5.0, 5.1, 5.2, and 5.3 could allow an authenticated user to bypass client-side validation and manipulate input data using man in the middle techniques.

Affected versions

Db2 on Cloud Pak for Data and Db2 Warehouse on Cloud Pak for Data: 4.8.0 through 1.8.4 (semver); 5.0.0 through 5.3.0 (semver) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

  • Apply vendor-provided updates or mitigations.
  • Review affected product exposure and access logs.

Public PoC references

No public PoC reference has passed the current publication threshold.