# CVE-2026-15915: IBM Concert information disclosure in build context copying

Source: https://junglewise.ai/threats/cve-2026-15915-ibm-concert-1-0-0-through-3-0-0-could-allow-a-local-attacker-to  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-15915 · Severity: medium · CVSS 6.2 · Published 2026-09-22

IBM Concert is a containerization tool used to package applications into container images. Versions 1.0.0 through 3.0.0 recursively copy build context directories into container images without proper filtering, potentially exposing sensitive files like credentials or private keys to local attackers who can access the resulting container images.

Technologies: [IBM Concert](https://junglewise.ai/threats/technologies/concert). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-15915 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-15915 being exploited in the wild.

**How severe is CVE-2026-15915?** Medium severity, with a CVSS score of 6.2, published 22 September 2026.

**Which products and versions are affected?** IBM Concert 1.0.0 through 3.0.0.

**Is there a fix for CVE-2026-15915?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-15915 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-15915?** Check whether you run IBM Concert at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

IBM Concert fails to sanitize build context during recursive directory copying into container images, allowing sensitive information to be included in the final image layer. A local attacker with access to the container image filesystem or registry can extract unintended secrets. The vulnerability affects versions 1.0.0 through 3.0.0 and requires local access to the container environment.

## Affected products

- IBM Concert 1.0.0 through 3.0.0

## Timeline

- 2026-09-22: disclosed

## References

- [https://www.ibm.com/support/pages/node/7288830](https://www.ibm.com/support/pages/node/7288830)

## Related threats

- [IBM Concert command injection vulnerability](https://junglewise.ai/threats/cve-2026-6715-ibm-concert-1-0-through-3-0-1-1-allows-an-attacker-can-supply)
- [IBM Concert arbitrary command execution in dependencies](https://junglewise.ai/threats/cve-2026-15266-ibm-concert-1-0-through-3-0-1-1-contains-components-that-allow)
- [IBM Concert weak cryptographic algorithms allow decryption](https://junglewise.ai/threats/cve-2026-6719-ibm-concert-1-0-through-3-0-0-uses-weaker-than-expected)
- [IBM Concert cross-site scripting in Web UI](https://junglewise.ai/threats/cve-2026-4413-ibm-concert-1-0-through-3-0-0-is-vulnerable-to-cross-site)
- [IBM Concert local web cache accessible to other users](https://junglewise.ai/threats/cve-2026-4405-ibm-concert-1-0-through-3-0-0-allows-web-page-cache-to-be-stored)