What is CVE-2026-12756?

CVE-2026-12756 is a high-severity vulnerability in IBM Business Automation Workflow Containers And Traditional, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.1/10. Published 2026-09-14.

How severe is CVE-2026-12756?

High severity. CVSS v3 base score is 7.1 out of 10.

XXE in IBM Business Automation Workflow Containers And Traditional

CVE-2026-12756

IBM Business Automation Workflow containers and traditional is vulnerable to an XML external entity injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.

Vulnerability class: XXE (XML External Entity)

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L.

Affected products

Ibm Business Automation Workflow Containers And Traditional

Weakness classification (CWE)

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

References

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

Frequently asked questions

What is CVE-2026-12756?: CVE-2026-12756 is a high-severity vulnerability in IBM Business Automation Workflow Containers And Traditional, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.1/10. Published 2026-09-14.
How severe is CVE-2026-12756?: High severity. CVSS v3 base score is 7.1 out of 10.