---
id: "CVE-2026-4413"
kind: "vulnerability"
aliases: ["CVE-2026-4413"]
title: "IBM Concert: unauthenticated cross-site scripting in the web UI"
severity: "medium"
cvss: 6.1
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["ibm-concert", "self-hosted", "vendor"]
not_affected_if: []
published_at: "2026-10-19T18:17:07+00:00"
first_seen_at: "2026-10-23T21:57:18+00:00"
updated_at: "2026-10-25T04:04:12+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4413", "first_seen_at": "2026-10-23T21:57:18+00:00"}]
---

# IBM Concert: unauthenticated cross-site scripting in the web UI

IBM Concert versions 1.0 through 3.0.0 have a cross-site scripting flaw in the web interface. An unauthenticated attacker can inject arbitrary JavaScript that runs in a user's trusted session and could expose credentials.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-10-23T21:57:18+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-4413

## From the sources

IBM Concert 1.0 through 3.0.0 is vulnerable to cross-site scripting. This vulnerability allows an unauthenticated attacker to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_