# CVE-2026-84418: IBM DataStage on Cloud Pak for Data TLS certificate validation bypass

Source: https://junglewise.ai/threats/cve-2026-84418-ibm-datastage-on-cloud-pak-for-data-5-4-0-0-can-allow-a-man-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-12. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-84418 · Severity: high · CVSS 7.4 · Published 2026-10-12

IBM DataStage is a data integration platform used within Cloud Pak for Data to build and manage data pipelines. An attacker can intercept network traffic from a user's machine by presenting a forged TLS certificate, then capture authentication tokens to gain unauthorized access to the victim's DataStage projects, data flows, and pipeline definitions. This requires an external network-level attacker positioned to intercept the user's connection, not an insider with cloud platform access.

Technologies: [IBM Datastage On Cloud Pak For Data](https://junglewise.ai/threats/technologies/datastage-on-cloud-pak-for-data). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-84418 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84418 being exploited in the wild.

**How severe is CVE-2026-84418?** High severity, with a CVSS score of 7.4, published 12 October 2026.

**Which products and versions are affected?** IBM Datastage On Cloud Pak For Data 5.4.0.0.

**Is there a fix for CVE-2026-84418?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-84418 attacked?** It is attacked over the network or from the adjacent network, in a hosted service.

**Am I affected by CVE-2026-84418?** Check whether you run IBM Datastage On Cloud Pak For Data at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in the client-side SDK code where TLS certificate validation is not properly enforced, allowing a man-in-the-middle attacker to present a forged certificate and intercept HTTPS connections. The session adapter automatically attaches an IAM bearer token in the Authorization header, which an attacker can capture to obtain full platform-scope tenant API access. Exploitation requires network-level interception capability but no prior authentication.

## Affected products

- IBM DataStage on Cloud Pak for Data 5.4.0.0

## Timeline

- 2026-10-12: disclosed

## References

- [https://www.ibm.com/support/pages/node/7288649](https://www.ibm.com/support/pages/node/7288649)

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- [IBM DataStage on Cloud Pak for Data SSRF](https://junglewise.ai/threats/cve-2026-107330-ibm-datastage-on-cloud-pak-for-data-5-4-0-0-could-allow-a-remote)