CVE-2026-0514 is a medium-severity Cross-Site Scripting (XSS) vulnerability identified in SAP Business Connector (SAP BC) version 4.8. This vulnerability arises from improper neutralization of input during web page generation, classified under CWE-79. An unauthenticated attacker can exploit this flaw by crafting a malicious URL that, when clicked by a legitimate user, causes the user’s browser to execute attacker-controlled scripts or redirect the user to a malicious site. The attack vector requires no prior authentication but does require user interaction (clicking the malicious link). The vulnerability affects the confidentiality and integrity of information related to the SAP Business Connector webclient, potentially allowing attackers to access or modify sensitive data. However, it does not impact the availability of the system. The CVSS v3.1 base score is 6.1, reflecting a network attack vector, low attack complexity, no privileges required, user interaction required, and a scope change due to potential impact beyond the vulnerable component. No patches have been released yet, and no known exploits are reported in the wild. SAP Business Connector is a middleware product widely used for integrating SAP systems with other applications, making this vulnerability relevant for organizations relying on SAP for business-critical processes. The vulnerability’s exploitation could lead to targeted phishing or social engineering campaigns leveraging the crafted malicious links to compromise user sessions or steal sensitive information.

For European organizations, this vulnerability poses a risk primarily to confidentiality and integrity of data handled via SAP Business Connector 4.8. Attackers could leverage this XSS flaw to hijack user sessions, steal credentials, or manipulate data presented in the webclient interface. This could lead to unauthorized access to business-critical information, data leakage, or manipulation of integration workflows. While availability is not affected, the compromise of data integrity and confidentiality could disrupt business operations, damage reputation, and lead to regulatory non-compliance under GDPR if personal or sensitive data is exposed. Organizations in sectors such as finance, manufacturing, utilities, and public administration that heavily rely on SAP integrations are particularly at risk. The requirement for user interaction means that phishing or social engineering campaigns could be used to increase exploitation likelihood. The absence of known exploits currently provides a window for proactive mitigation, but the medium severity score indicates a need for timely response to prevent potential attacks.

1. Implement strict input validation and output encoding on all user-supplied data within SAP Business Connector web interfaces to prevent injection of malicious scripts. 2. Educate users about the risks of clicking unsolicited or suspicious links, especially those purporting to be related to SAP systems. 3. Employ web filtering and email security solutions to detect and block malicious URLs that could exploit this vulnerability. 4. Monitor SAP Business Connector logs and web traffic for unusual activities or access patterns indicative of exploitation attempts. 5. Isolate SAP Business Connector interfaces behind secure gateways or VPNs to limit exposure to external attackers. 6. Engage with SAP support channels to obtain patches or workarounds as soon as they become available, and apply them promptly. 7. Use Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing SAP Business Connector web interfaces. 8. Conduct regular security assessments and penetration testing focused on web application vulnerabilities within SAP environments. 9. Limit user privileges and enforce strong authentication mechanisms to reduce the impact of compromised sessions. 10. Maintain up-to-date asset inventories to quickly identify and remediate affected SAP Business Connector instances.