CVE-2025-36431 in Sterling B2B Integrator
Summary
by MITRE • 07/30/2026
IBM Sterling B2B Integrator 6.2.2.0 through 6.2.2.0_1 and IBM Sterling File Gateway 6.2.2.0 through 6.2.2.0_1 is vulnerable to cross-site scripting. This vulnerability allows an authenticated user 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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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability exists in IBM Sterling B2B Integrator and IBM Sterling File Gateway versions 6.2.2.0 through 6.2.2.0_1, representing a critical cross-site scripting flaw that compromises the integrity of the web-based user interface. The vulnerability stems from inadequate input validation and output encoding mechanisms within the web application's front-end components, allowing authenticated users to inject malicious JavaScript code into the application's response streams. This weakness falls under CWE-79 - Cross-Site Scripting, specifically manifesting as a stored XSS variant where malicious payloads persist in the application's data stores and execute against other users who access affected pages.
The security implications of this vulnerability extend beyond simple script execution, creating potential pathways for session hijacking and credential theft within trusted user sessions. An authenticated attacker with access to the web interface can craft malicious inputs that are then rendered back to other users browsing the affected application, enabling the execution of arbitrary JavaScript code in their browsers. This capability directly aligns with ATT&CK technique T1531 - Account Access Removal and T1078 - Valid Accounts, as compromised sessions could lead to unauthorized access to sensitive business data and integration endpoints.
The operational impact of this vulnerability is significant for organizations relying on these IBM products for critical B2B integration processes. Attackers can exploit the XSS flaw to steal session cookies, redirect users to malicious sites, or manipulate application functionality to gain unauthorized access to business-critical data flows. The authenticated nature of the vulnerability means that attackers need only compromise a single legitimate user account to potentially affect the entire organization's trust boundaries, making this particularly dangerous in enterprise environments where these products handle sensitive financial and operational data exchanges.
Organizations should implement immediate mitigations including input sanitization at all entry points, proper output encoding for web content, and comprehensive security testing of user-facing interfaces. The recommended approach involves deploying web application firewalls with XSS detection capabilities, implementing content security policies to restrict script execution, and conducting regular security assessments using tools like OWASP ZAP or Burp Suite. Additionally, organizations should review their user access controls and implement principle of least privilege to limit the potential damage from compromised accounts. This vulnerability serves as a reminder of the critical importance of secure coding practices and regular vulnerability assessments in enterprise integration platforms that handle sensitive business data flows.