IBM Business Automation Workflow 24-26: Hostname Cert Mismatch (CVE-2026-12730)
CVE-2026-12730 Published on August 5, 2026
Improper Validation of Certificate with Host Mismatch in IBM Business Automation Workflow containers
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.
Vulnerability Analysis
CVE-2026-12730 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
Improper Validation of Certificate with Host Mismatch
The software communicates with a host that provides a certificate, but the software does not properly ensure that the certificate is actually associated with that host.
Products Associated with CVE-2026-12730
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Affected Versions
IBM Business Automation Workflow containers and traditional:- Version 26.0.0 is affected.
- Version 25.0.0, <= 25.0.0 Interim Fix 005 is affected.
- Version 24.0.1, <= 24.0.1 Interim Fix 007 is affected.
- Version 24.0.0, <= 24.0.0 Interim Fix 009 is affected.