Description

Improper neutralization of input during web page generation ('cross-site scripting') in Azure Storage Explorer allows an unauthorized attacker to elevate privileges over a network.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.8",
  "pubDate": "2026-08-11T17:18:04.610Z",
  "pubdate": "2026-08-11T17:18:04.610Z",
  "executiveSummary": "An improper neutralization of input vulnerability, classified as Cross-Site Scripting (XSS), exists within Azure Storage Explorer.\nThis security flaw allows an unauthorized remote attacker to execute arbitrary scripts in the context of the application, ultimately leading to privilege escalation over the network.\nThe vulnerability directly impacts Azure Storage Explorer, posing significant risk implications regarding unauthorized access, data exposure, and potential compromise of elevated execution contexts.\nThe attack vector relies on network-based exploitation where an unauthorized threat actor leverages improperly sanitized input processed during web page generation within the application.\nSuccessful exploitation requires the application to process maliciously crafted input, allowing the execution of arbitrary code.\nThe realization of this risk grants the attacker capabilities to escalate privileges, potentially leading to unauthorized administrative control or manipulation of storage resources depending on the underlying execution privileges of the vulnerable component.",
  "technicalDetails": "The vulnerability is rooted in the improper neutralization of input during web page generation within Azure Storage Explorer, manifesting as a classic Cross-Site Scripting (XSS) vulnerability.\nThe root cause stems from the application accepting untrusted input and rendering it within the user interface or internal web-based components without adequate sanitization, context-aware encoding, or validation.\nThe vulnerable component is responsible for processing dynamic data and constructing web pages or UI views within Azure Storage Explorer.\nExploitation occurs over the network, where an unauthorized attacker transmits crafted malicious input containing executable script payloads to the target application.\nWhen Azure Storage Explorer processes and renders this input during web page generation, the application fails to neutralize the malicious payload, causing the embedded script to execute within the security context of the affected application component.\nBecause the execution occurs within the application's environment, the payload can interact with local storage, access session data, or leverage higher-privileged application functionalities.\nThe attack flow proceeds as follows: First, the attacker identifies an input vector that is reflected or processed during web page generation. Second, the attacker crafts a malicious payload incorporating executable script content. Third, the attacker transmits the payload across the network to the vulnerable Azure Storage Explorer instance. Fourth, the application processes the input and dynamically generates the web page, embedding the unescaped payload. Fifth, upon rendering, the browser or internal rendering engine executes the script.\nThe post-exploitation impact includes unauthorized privilege escalation, potential extraction of sensitive authentication tokens or configuration data, and manipulation of the application state, all achieved without requiring prior authentication or elevated privileges from the attacker."
}