What is CVE-2026-12730?

CVE-2026-12730 is a low-severity vulnerability in IBM Business Automation Workflow, classified under Improper Validation of Certificate with Host Mismatch. CVSS score: 3.8/10. Published 2026-08-05.

How severe is CVE-2026-12730?

Low severity. CVSS v3 base score is 3.8 out of 10.

Vulnerability in IBM Business Automation Workflow

CVE-2026-12730

IBM Business Automation Workflow containers and traditional 26.0.0, 25.0.0 through 25.0.0 Interim Fix 005, 24.0.1 through 24.0.1 Interim Fix 007, and 24.0.0 through 24.0.0 Interim Fix 009 IBM Business Automation Workflow fails to properly verify that the hostname matches the server certificate potentially allowing connections to an attacker-controlled server.

EPSS: 0.001 (1.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N.

Affected products

Ibm Business_automation_workflow — versions 24.0.0, 24.0.1, 25.0.0
Ibm Business Automation Workflow Containers And Traditional — versions 26.0.0, 25.0.0, 24.0.1

Weakness classification (CWE)

CWE-297 — Improper Validation of Certificate with Host Mismatch

References

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

Frequently asked questions

What is CVE-2026-12730?: CVE-2026-12730 is a low-severity vulnerability in IBM Business Automation Workflow, classified under Improper Validation of Certificate with Host Mismatch. CVSS score: 3.8/10. Published 2026-08-05.
How severe is CVE-2026-12730?: Low severity. CVSS v3 base score is 3.8 out of 10.