# CVE-2026-6544: IBM Concert directory recursion allows uncontrolled file inclusion

Source: https://junglewise.ai/threats/cve-2026-6544-ibm-concert-1-0-0-through-3-0-0-allows-recursive-copying-of  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-24. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-6544 · Severity: medium · CVSS 6.2 · Published 2026-09-24

IBM Concert, a software suite, contains a flaw in how it handles recursive directory copying that lacks proper validation. An attacker could exploit this to copy sensitive or unnecessary files into unexpected locations, potentially exposing confidential information or expanding the attack surface of a system using the software.

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

## Quick answers

**Is CVE-2026-6544 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-6544 being exploited in the wild.

**How severe is CVE-2026-6544?** Medium severity, with a CVSS score of 6.2, published 24 September 2026.

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

**Is there a fix for CVE-2026-6544?** 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-2026-6544 attacked?** It is attacked with local access or over the network.

**Am I affected by CVE-2026-6544?** 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 versions 1.0.0 through 3.0.0 fail to properly validate or restrict recursive directory copy operations, allowing unintended inclusion of sensitive files in copied directory trees. An attacker with local or network access to trigger directory copy operations could enumerate and extract confidential files or manipulate the application's file structure to increase exposure. The vulnerability appears to require some level of access to trigger the vulnerable code path.

## Affected products

- IBM Concert 1.0.0 through 3.0.0

## Timeline

- 2026-09-24: 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)