Cross-site scripting in validator.js - CVE-2025-56200

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Main Vulnerability Database Vulnerabilities #VU122967

Cross-site scripting in validator.js - CVE-2025-56200

Published: February 16, 2026


Vulnerability identifier: #VU122967
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2025-56200
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via "A URL validation bypass vulnerability exists" when crafting URLs leading to XSS and Open Redirect attacks. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website .

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


Affected software

validator.js
Verify Identity Access Digital Credentials
IBM Event Endpoint Management
watsonx Assistant Cartridge
watsonx Orchestrate with watsonx Assistant Cartridge - Assistant Builder Component
App Connect Enterprise Certified Container

How to mitigate CVE-2025-56200

Cybersecurity Help is currently unaware of any official solution to address this vulnerability..

validator.js - update to 13.15.20
IBM Event Endpoint Management - update to 11.7.0
watsonx Assistant Cartridge - update to 5.3.0
watsonx Orchestrate with watsonx Assistant Cartridge - Assistant Builder Component - update to 5.3.0
App Connect Enterprise Certified Container - addressed in versions 12.0.18, 12.18.0

External References

Related Security Bulletins