Description

The MDM App Catalog / App Store preview does not properly sanitize or encode user-supplied HTML before rendering it.  Injected HTML can be displayed to users who view the preview, which may allow cross-site scripting (XSS) when a user interacts with the crafted content.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.3",
  "pubDate": "2026-11-06T08:17:36.033Z",
  "pubdate": "2026-11-06T08:17:36.033Z",
  "executiveSummary": "This vulnerability is classified as a Cross-Site Scripting (XSS) flaw identified within the MDM App Catalog/App Store preview functionality.\nThe issue arises from a failure to perform adequate input validation and output encoding on user-supplied data before it is processed and rendered by the application's user interface.\nThe vulnerability poses a significant risk to organizational security, as it allows unauthorized actors to inject and execute arbitrary HTML or JavaScript within the security context of a legitimate user's session.\nIf exploited, this flaw could lead to the theft of session tokens, unauthorized access to sensitive MDM data, or the redirection of users to malicious external domains.\nThe attack is contingent upon the ability of an attacker to influence the content displayed in the preview pane, which is subsequently rendered in the victim's browser.\nAs this affects a core component of the MDM infrastructure, it represents a critical risk to the integrity and confidentiality of managed device ecosystems.",
  "technicalDetails": "The root cause of this vulnerability is improper neutralization of input within the MDM App Catalog and App Store preview rendering engine. The application accepts metadata or descriptions associated with mobile applications and renders them directly into the Document Object Model (DOM) without applying sufficient context-aware output encoding or sanitization routines.\nThe exploitation process initiates when an attacker injects malicious scripts or HTML tags into fields that are processed by the preview component. Because the application does not validate or encode these inputs, the injected content is treated as executable code by the victim's web browser when they navigate to the affected App Store page.\nThe attack flow proceeds as follows: First, the attacker identifies a field—such as an application title, description, or custom metadata field—that is reflected in the preview interface. Second, the attacker submits a crafted payload containing script tags or event handlers (e.g., onerror, onload) to the MDM system, effectively weaponizing the catalog content. Third, when an authenticated administrator or end-user opens the preview for the maliciously modified application, the browser parses the payload. Fourth, the malicious script executes within the context of the MDM web portal’s origin, granting the attacker access to the same privileges as the victim.\nGiven that this vulnerability occurs within the browser rendering phase, the impact is confined to the client-side session. However, the post-exploitation impact is severe. Successful execution enables the exfiltration of Session IDs, CSRF tokens, or other sensitive cookies, potentially allowing the attacker to perform administrative actions on behalf of the user, such as pushing malicious configurations to managed devices, modifying security policies, or harvesting inventory data. The vulnerability does not require authentication from the victim if the preview is publicly accessible, although administrative access is typically required for the initial payload injection. The lack of Content Security Policy (CSP) headers or their misconfiguration often exacerbates this vulnerability by failing to restrict the execution of inline scripts or connections to unauthorized remote domains."
}