CVE-2026-12750 in Cloud Pak for Business Automation
Summary
by MITRE • 09/15/2026
IBM Cloud Pak for Business Automation is vulnerable to stored 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 • 09/15/2026
The IBM Cloud Pak for Business Automation platform contains a critical security flaw classified as a Stored Cross-Site Scripting (XSS) vulnerability, specifically identified under CWE-79. This weakness arises from insufficient validation and sanitization of user-supplied input before it is processed by the application's backend systems. Unlike reflected XSS attacks where malicious scripts are embedded in URLs or temporary requests, this stored variant allows an authenticated attacker to inject persistent malicious content directly into the web interface. The vulnerability exists because the system fails to properly neutralize special characters that have HTML-based meaning when rendering user-generated data back to other users' browsers. This lack of proper output encoding creates a pathway for attackers to execute arbitrary JavaScript code within the context of the trusted application domain, effectively bypassing same-origin policy protections and compromising the integrity of the web session.
From an operational perspective, this vulnerability poses a severe risk to organizational security posture because it enables persistent attacks that do not require complex social engineering or immediate user interaction beyond initial submission. An authenticated attacker can embed scripts in fields such as comments, profile descriptions, or configuration settings within the Business Automation workflow. When other users view these pages, their browsers will execute the injected JavaScript code automatically. The primary impact of this execution is the potential for complete credential disclosure and session hijacking. Attackers can utilize techniques to steal authentication tokens, cookies, or sensitive form data entered by legitimate users, thereby gaining unauthorized access to privileged accounts. This capability allows adversaries to impersonate trusted users, manipulate business processes, exfiltrate confidential corporate data, or further escalate privileges within the environment without detection from standard security monitoring tools that do not inspect client-side script execution.
The attack vector for this vulnerability aligns with several tactics in the MITRE ATT&CK framework, particularly T1059 which covers Command and Scripting Interpreter activities executed on the victim's machine via browser-based scripts. Furthermore, it relates to T1078 regarding Valid Accounts, as exploitation requires initial authentication but leverages those credentials to compromise other users or systems. The persistence of stored XSS means that even if the original attacker is logged out, subsequent visits by any user with access rights can trigger the malicious payload, creating a long-term threat surface within the application. This persistent nature distinguishes it from transient vulnerabilities and complicates remediation efforts since all affected records must be identified and sanitized to fully mitigate the risk.
To address this vulnerability, immediate mitigation strategies should focus on implementing robust input validation and output encoding mechanisms across all entry points in the IBM Cloud Pak for Business Automation interface. Developers must ensure that any user-supplied data is strictly validated against a whitelist of allowed characters before storage and then encoded appropriately using context-aware techniques such as HTML entity encoding when rendering to the browser. Additionally, enabling Content Security Policy headers can help mitigate the impact by restricting where scripts are loaded from, although this should not be relied upon solely as it may break legitimate application functionality if misconfigured. Organizations running affected versions of IBM Cloud Pak for Business Automation must apply the latest security patches provided by IBM immediately. Regular vulnerability scanning and penetration testing focused on web application security controls are recommended to identify similar flaws in custom integrations or extensions that might share these architectural weaknesses.