Vulnerability · Published Oct 12, 2026 · Assigned by ibm

CVE-2026-84418DataStage on Cloud Pak for Data Improper Certificate Validation

High 7.4

In plain English

A high-severity improper certificate validation in DataStage on Cloud Pak for Data from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 3.1)7.4High

Exploit odds (30 days)0.1%top 96.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

IBM DataStage on Cloud Pak for Data 5.4.0.0 can allow a man-in-the-middle attacker to present a forged TLS certificate, intercept the connection, and capture the IAM bearer Authorization header automatically attached by the session adapter. The captured token grants full platform-scope tenant API access, enabling the attacker to read and manipulate the victim's DataStage projects, flows, assets, and pipeline definitions. This is client-side SDK code running on the user's own machine, so exploitation requires an external network interceptor rather than a co-tenant in the shared cluster.

Affected products (as reported)

Vendor	Product	Versions
IBM	DataStage on Cloud Pak for Data	5.4.0.0

Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

https://www.ibm.com/support/pages/node/7288649 vendor-advisory, patch