CVE-2026-84418: IBM DataStage on Cloud Pak for Data 5.4.0.0 can allow a man-in-the-middle attacker to present a forged TLS cer

Routine

HIGH 7.4REMOTEDOWNGRADE

CVE-2026-84418 is a high-severity flaw (CVSS 7.4) affecting datastage on cloud pak for data. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 c

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.4 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-295
Published	2026-10-12
Last modified	2026-10-14

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-12 23:17 UTCPublished CVE record published
2026-10-14 23:50 UTCUpdated Record last modified

ibm datastage on cloud pak for data DOWNGRADE

Affected: 5.4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.4.0

1. Check installed version

apt-cache policy datastage-on-cloud-pak-for-data || rpm -q datastage-on-cloud-pak-for-data || datastage-on-cloud-pak-for-data --version

2. No fixed release: DOWNGRADE to a release before 5.4.0 (Debian / Ubuntu)

apt-cache madison datastage-on-cloud-pak-for-data sudo apt install datastage-on-cloud-pak-for-data=<VERSION_BEFORE_5.4.0> sudo apt-mark hold datastage-on-cloud-pak-for-data

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list datastage-on-cloud-pak-for-data sudo dnf downgrade datastage-on-cloud-pak-for-data-<VERSION_BEFORE_5.4.0> sudo dnf versionlock add datastage-on-cloud-pak-for-data

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-84418?

datastage on cloud pak for data: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-84418 being exploited?

CVE-2026-84418 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-84418 affect?

CVE-2026-84418 affects datastage on cloud pak for data. Severity is high (CVSS 7.4). 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.

How urgent is CVE-2026-84418?

Priority 32/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-82096 HIGH 8.8 DOWNGRADE IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary c
CVE-2026-82101 CRITICAL 9.6 DOWNGRADE IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to cause a denial of s
CVE-2026-82103 CRITICAL 9.6 DOWNGRADE IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to obtain sensitive in
CVE-2026-82108 HIGH 8.8 DOWNGRADE IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary c
CVE-2026-82110 CRITICAL 9.6 DOWNGRADE IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary c

References

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