Quick answers
- Is CVE-2026-16427 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-16427 being exploited in the wild.
- How severe is CVE-2026-16427?
- Medium severity, with a CVSS score of 6.5, published 8 November 2026.
- Which products and versions are affected?
- IBM Cloud Pak For Data 5.4.0.0; IBM DataStage 5.4.0.0.
- Is there a fix for CVE-2026-16427?
- 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-2026-16427 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-16427?
- Check whether you run IBM Cloud Pak For Data or IBM DataStage 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
A path traversal vulnerability in IBM DataStage on Cloud Pak for Data 5.4.0.0 allows a remote authenticated user to write arbitrary files to the system. The vulnerability arises from improper validation of file path inputs, enabling attackers to use directory traversal sequences (e.g., "../") to escape intended directory restrictions. Exploitation requires authentication but no user interaction.
Affected products
- IBM DataStage 5.4.0.0
- IBM Cloud Pak for Data 5.4.0.0
Timeline
- 2026-11-08: disclosed