# CVE-2026-4413: IBM Concert cross-site scripting in Web UI

Source: https://junglewise.ai/threats/cve-2026-4413-ibm-concert-1-0-through-3-0-0-is-vulnerable-to-cross-site  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-19. Updated: 2026-10-19  
License: CC BY 4.0 with a link back

CVE-2026-4413 · Severity: medium · CVSS 6.1 · Published 2026-10-19

IBM Concert is a web-based software platform used for enterprise applications. An unauthenticated attacker can inject malicious JavaScript code into the Web UI, which executes in the browser of any user with a trusted session. This could allow credential theft, session hijacking, or unauthorized actions performed on behalf of the victim.

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

## Quick answers

**Is CVE-2026-4413 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-4413 being exploited in the wild.

**How severe is CVE-2026-4413?** Medium severity, with a CVSS score of 6.1, published 19 October 2026.

**Which products and versions are affected?** IBM Concert 1.0 through 3.0.0.

**Is there a fix for CVE-2026-4413?** 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-2026-4413 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-4413?** 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

Cross-site scripting (XSS) vulnerability in IBM Concert's Web UI allows unauthenticated attackers to embed arbitrary JavaScript code. The attacker can craft malicious input that executes in the context of a victim's browser session with trusted authentication, leading to credential disclosure or session compromise. No authentication is required to craft the payload, though user interaction may be needed to trigger it.

## Affected products

- IBM Concert 1.0 through 3.0.0

## Timeline

- 2026-10-19: disclosed

## References

- [https://www.ibm.com/support/pages/node/7292374](https://www.ibm.com/support/pages/node/7292374)

## 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 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)
- [IBM Concert information disclosure through schema suggestions](https://junglewise.ai/threats/cve-2026-3628-ibm-concert-1-0-through-3-0-0-allows-information-disclosure)