CVE-2026-12751 in Cloud Pak for Business Automation
Summary
by MITRE • 09/15/2026
IBM Cloud Pak for Business Automation is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.
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Analysis
by VulDB Data Team • 09/15/2026
The vulnerability identified in IBM Cloud Pak for Business Automation represents a significant web application security flaw classified as Cross-Site Scripting via HTML injection. This type of vulnerability arises when an application includes untrusted data in its output without proper validation or encoding, allowing attackers to inject malicious scripts that are interpreted by the victim's browser as part of the trusted page content. In this specific instance, a remote attacker can exploit the lack of sanitization on user-supplied input fields within the Cloud Pak for Business Automation interface. When an administrator or authorized user views a compromised element containing the injected HTML code, the browser executes it within the security context of the hosting site. This means the malicious script runs with the same privileges as legitimate scripts from IBM's domain, bypassing standard cross-origin policies that typically restrict how pages interact with each other.
From a technical perspective, this flaw aligns closely with CWE-80, which describes Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). The core issue lies in the application's failure to properly neutralize special characters or tags before rendering them in the user interface. By injecting raw HTML rather than just JavaScript, an attacker can manipulate the structure and style of the page itself, potentially creating deceptive login forms, altering navigation elements, or embedding hidden iframes that load external malicious content. This structural manipulation makes it difficult for users to distinguish between legitimate application behavior and attacker-controlled modifications, thereby increasing the success rate of social engineering attacks facilitated by the vulnerability.
The operational impact of this vulnerability is severe due to its potential to facilitate session hijacking, credential theft, and defacement of the administrative interface. Since IBM Cloud Pak for Business Automation handles sensitive business processes and data, an attacker who successfully executes code in the context of a privileged user can access confidential information stored within the application. This includes personal identifiable information, financial records, or proprietary workflow configurations. Furthermore, if the victim is an administrator with elevated privileges, the attacker could potentially modify system settings, create new unauthorized accounts, or deploy further malicious payloads across the broader Kubernetes cluster managed by Cloud Pak for Business Automation. The ability to execute code within the security context of the hosting site effectively neutralizes browser-based protections like SameSite cookies and Content Security Policy in certain configurations, leading to a complete compromise of user session integrity.
This vulnerability is also mapped to MITRE ATT&CK technique T1059, specifically sub-technique 007 for JavaScript execution, which describes how attackers use scripts embedded in web pages to perform malicious actions on behalf of the victim. The attack vector falls under Remote Code Execution via Web Application Interface, leveraging social engineering as a secondary component since it requires a user to view the injected content. To mitigate this risk, IBM has released patches that enforce strict input validation and output encoding for all dynamic content rendered in the web interface. Administrators should immediately apply the latest security updates provided by IBM to ensure that HTML tags are properly escaped or stripped before being processed by the browser. Additionally, implementing a robust Content Security Policy (CSP) can provide an additional layer of defense by restricting the sources from which scripts and other resources can be loaded, thereby limiting the impact even if some injection attempts succeed. Regular security audits and penetration testing focused on input validation are recommended to identify similar weaknesses in custom integrations or extensions within the Cloud Pak environment.