CVE-2026-67075 in Digital Experience
Summary
by MITRE • 10/01/2026
HCL Digital Experience is affected by improper input sanitation. This can result in HTML injection which could be leveraged in content spoofing from a trusted domain. Apply HCL Digital Experience 9.5 CF238 or later to address this.
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Analysis
by VulDB Data Team • 10/01/2026
The vulnerability identified in HCL Digital Experience involves an insufficient sanitization of user-supplied input, specifically within the processing of data that is subsequently rendered as HTML content. This flaw represents a classic instance of improper input validation where the application fails to adequately filter or escape special characters and script tags before they are processed by the browser environment. When an attacker injects malicious HTML markup into these fields, the web server accepts this untrusted data without applying necessary security controls such as context-aware encoding or strict allow-listing of permitted character sets. This lack of rigorous input sanitation allows the injected content to be interpreted and executed by the client-side rendering engine rather than being treated as plain text data.
The primary technical consequence of this deficiency is Cross-Site Scripting, commonly referred to in industry standards under CWE-79: Improper Neutralization of Input During Web Page Generation. By leveraging this weakness, an attacker can inject arbitrary HTML structures into the application's response stream. Unlike traditional script injection which focuses on executing JavaScript code for session hijacking or data theft, this specific manifestation is particularly dangerous because it facilitates content spoofing from a trusted domain. Since the malicious content originates from the same origin as the legitimate HCL Digital Experience server, browsers do not trigger cross-origin security warnings. This allows attackers to seamlessly blend deceptive elements with authentic site components, creating a highly convincing facade that mimics official login pages or administrative interfaces without raising suspicion in standard browser security checks.
The operational impact of this vulnerability extends beyond simple defacement and poses significant risks related to social engineering and credential harvesting. Because the spoofed content appears to come from a trusted source, users are more likely to interact with it under false pretenses. Attackers can embed forms that capture sensitive user credentials or personal information, which are then exfiltrated to external servers controlled by the adversary. Furthermore, this technique can be used to redirect legitimate traffic to phishing sites or to display misleading warnings that disrupt business operations and erode trust in the digital platform. The ability to manipulate the visual presentation of a trusted domain undermines the integrity of the user experience and compromises the confidentiality of any data entered into these spoofed interfaces.
To mitigate this risk, organizations must apply HCL Digital Experience version 9.5 Cumulative Fix 238 or later, as specified by the vendor. This update includes patches that enforce stricter input validation rules and implement robust output encoding mechanisms to ensure that all user-supplied data is properly neutralized before being rendered in HTML contexts. In addition to applying the patch, administrators should review existing configurations for any custom modules or plugins that might bypass these core security controls. Implementing a Content Security Policy header can also provide an additional layer of defense by restricting the sources from which scripts and other resources are loaded, thereby limiting the impact if similar vulnerabilities exist in unpatched components. Regular security assessments and code reviews focusing on input handling practices should be conducted to prevent recurrence of such injection flaws across the application ecosystem.