Description

Improper limitation of a pathname to a restricted directory ('path traversal') in Application Insights Profiler allows an authorized attacker to elevate privileges over a network.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.8",
  "pubDate": "2026-08-07T00:16:30.800Z",
  "pubdate": "2026-08-07T00:16:30.800Z",
  "executiveSummary": "An improper limitation of a pathname to a restricted directory, commonly known as path traversal, exists within Application Insights Profiler. This vulnerability allows an authenticated attacker to exploit improper input validation and manipulate file paths over a network vector.\nThe primary impact of this security flaw is privilege escalation, enabling malicious actors to potentially access, modify, or interact with unauthorized system files and directories beyond their intended operational boundaries.\nThe affected product is Application Insights Profiler. Exploitation requires the attacker to be authorized within the system context, leveraging network access to interact with the vulnerable component.\nThe risk implications are significant, as successful exploitation bridges permission boundaries, granting elevated capabilities that could lead to further system compromise or unauthorized data disclosure.\nMitigation requires applying vendor-supplied patches or updates that enforce strict path sanitization and input validation mechanisms within the affected application logic.",
  "technicalDetails": "The root cause of the vulnerability stems from insufficient validation and sanitization of user-supplied path inputs within Application Insights Profiler. When the application processes file system requests, it fails to adequately restrict directory traversal sequences such as dot-dot-slash (../), allowing payloads to break out of the intended restricted directory root.\nThe vulnerability is exposed over a network vector, requiring the attacker to possess initial authorization to interact with the vulnerable component. Despite the authentication requirement, an authorized attacker can leverage this access to execute privilege escalation by targeting sensitive system files or restricted application directories.\nThe step-by-step attack flow initiates when the attacker crafts a malicious request containing directory traversal sequences directed at the Application Insights Profiler endpoint. The vulnerable component processes the input without verifying whether the resulting file path resolves within the authorized directory boundary.\nConsequently, the file system operations evaluate the manipulated path, granting the attacker read or write access to resources outside the intended scope. This unauthorized file system interaction facilitates the escalation of privileges, as the attacker may access configuration files, sensitive binaries, or data stores restricted to higher privilege tiers.\nPost-exploitation impact includes the potential exposure of sensitive internal data, manipulation of critical application files, and further system compromise depending on the level of file system access achieved through the traversal vector."
}