CVE-2026-4413: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') in IBM Concert

CVE-2026-4413 describes a cross-site scripting vulnerability in IBM Concert versions 1.0 through 3.0.0. The vulnerability arises from improper neutralization of input during web page generation, allowing unauthenticated attackers to embed arbitrary JavaScript code in the web UI. This can alter intended functionality and potentially lead to disclosure of user credentials within an active session. The CVSS 3.1 vector indicates the attack can be performed remotely over the network without privileges, requires user interaction, and impacts confidentiality and integrity with a scope change.

An unauthenticated attacker can exploit this vulnerability to execute arbitrary JavaScript in the context of the IBM Concert web interface. This may lead to altered application behavior and potential disclosure of user credentials within a trusted session. The vulnerability does not impact availability but affects confidentiality and integrity.

No explicit patch or remediation information is provided in the available data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, consider restricting access to the affected versions and applying web application firewall rules to detect and block XSS payloads if feasible.