CVE-2026-15915 IBM CVE debrief

Who should care

Defenders responsible for IBM Concert deployments, particularly those with local access to build context directories, should assess exposure and prioritize remediation.

Why it matters

Defenders should prioritize verifying and remediating IBM Concert deployments to prevent sensitive information disclosure due to recursive directory copying. This vulnerability allows local attackers to obtain sensitive build context information, emphasizing the need for compensating controls and updated build processes.

• Sensitive information exposure due to recursive directory copying
• Potential for local attackers to obtain sensitive build context information
• Need for verifying and remediating IBM Concert deployments
• Priority on restricting local access to sensitive build context directories

Technical summary

IBM Concert 1.0.0 through 3.0.0 is vulnerable to sensitive information disclosure due to recursive copying of build context directories into container images. A local attacker could exploit this vulnerability to obtain sensitive information by accessing the build context directories. This can be mitigated by verifying and remediating IBM Concert deployments, implementing compensating controls to monitor and limit sensitive information exposure, and reviewing and updating container image build processes to prevent recursive directory copying.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability in IBM Concert deployments, focusing on restricting local access to sensitive build context directories.

Recommended defensive actions

• Verify and remediate IBM Concert deployments to restrict local access to sensitive build context directories
• Implement compensating controls to monitor and limit sensitive information exposure
• Review and update container image build processes to prevent recursive directory copying

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 6.2 and MEDIUM severity. IBM has released a vendor advisory for this issue.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.