What is CVE-2026-80434?

CVE-2026-80434 is a high-severity vulnerability in IBM Datastage On Cloud Pak For Data, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.4/10. Published 2026-09-10.

How severe is CVE-2026-80434?

High severity. CVSS v3 base score is 7.4 out of 10.

Auth bypass in IBM Datastage On Cloud Pak For Data

CVE-2026-80434

IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to manipulate runtime caches and cause a denial of service due to an insecure direct object reference.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.

Affected products

Ibm Datastage On Cloud Pak For Data — versions 5.4.0.0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-80434?: CVE-2026-80434 is a high-severity vulnerability in IBM Datastage On Cloud Pak For Data, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.4/10. Published 2026-09-10.
How severe is CVE-2026-80434?: High severity. CVSS v3 base score is 7.4 out of 10.