What is CVE-2026-81536?

CVE-2026-81536 is a high-severity vulnerability in IBM Datastage On Cloud Pak For Data, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.7/10. Published 2026-09-23.

How severe is CVE-2026-81536?

High severity. CVSS v3 base score is 7.7 out of 10.

XXE in IBM Datastage On Cloud Pak For Data

CVE-2026-81536

IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to obtain sensitive information due to an XML external entity (XXE) injection.

Vulnerability class: XXE (XML External Entity)

Published 2026-09-23.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM Datastage On Cloud Pak For Data — versions 5.4.0.0

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

www.ibm.com/support/pages/node/7288649 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-81536?: CVE-2026-81536 is a high-severity vulnerability in IBM Datastage On Cloud Pak For Data, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.7/10. Published 2026-09-23.
How severe is CVE-2026-81536?: High severity. CVSS v3 base score is 7.7 out of 10.