CVE-2025-36298 in Sterling B2B Integrator
Summary
by MITRE • 07/30/2026
IBM Sterling B2B Integrator 6.1.2.0 through 6.1.2.7_2, 6.2.0.0 through 6.2.0.5_2, 6.2.1.0 through 6.2.1.1_2, and 6.2.2.0 through 6.2.2.0_1 and IBM Sterling File Gateway 6.1.2.0 through 6.1.2.7_2, 6.2.0.0 through 6.2.0.5_2, 6.2.1.0 through 6.2.1.1_2, and 6.2.2.0 through 6.2.2.0_1 Ebics server component 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
The vulnerability identified in IBM Sterling B2B Integrator and IBM Sterling File Gateway affects the Ebics server component across multiple version ranges, representing a critical cross-site scripting flaw that undermines the security posture of these enterprise integration platforms. This vulnerability resides within the web user interface components where user input is not properly sanitized before being rendered back to the browser, creating an attack surface that can be exploited by authenticated users who possess valid credentials to access the systems.
The technical implementation of this XSS vulnerability stems from insufficient input validation and output encoding mechanisms within the web application's response handling. When authenticated users submit malicious payloads through susceptible interface elements, the system fails to properly escape or filter special characters that could alter the intended HTML structure, allowing JavaScript code to be injected into the page context. This flaw specifically impacts the Ebics server component which handles electronic banking communication protocols, making it particularly concerning given the sensitive nature of financial data exchanges and the trusted session contexts these applications typically operate within.
The operational impact of this vulnerability extends beyond simple functionality alteration, as it creates a pathway for credential theft and session hijacking within trusted environments. An authenticated attacker can leverage this XSS flaw to execute malicious scripts that intercept session cookies, capture login credentials, or redirect users to malicious domains while maintaining the appearance of legitimate system interactions. The attack vector becomes particularly dangerous when considering that these platforms often process sensitive financial transactions and data exchanges where the authenticated user context represents legitimate access to critical business systems.
Security professionals should recognize this vulnerability as a direct implementation of CWE-79 - Cross-site Scripting, which represents one of the most prevalent web application security weaknesses documented in the Common Weakness Enumeration catalog. The attack pattern aligns with ATT&CK technique T1566.001 - Phishing: Spearphishing Attachment, where malicious code delivery occurs through trusted web interfaces rather than traditional email attachments. Organizations should prioritize immediate remediation efforts focusing on input sanitization, output encoding, and proper content security policy implementation to prevent exploitation of this vulnerability across all affected IBM Sterling product versions.
Mitigation strategies should encompass comprehensive patch management programs targeting the specific IBM security fixes released for these vulnerable versions, combined with enhanced web application firewall rules that can detect and block suspicious script injection patterns. Additionally, organizations should implement strict input validation controls, adopt secure coding practices for web interface components, and establish monitoring protocols to detect anomalous user behavior patterns that might indicate exploitation attempts. The implementation of Content Security Policy headers and proper session management controls further strengthens the defense-in-depth approach necessary to protect against this class of vulnerability while maintaining system functionality and user experience standards.